- R 'n' B ... rabbit bandicoot
- rabbit bandicoot ... rabble-rouser
- rabble-rouser ... raccoon
- raccoon ... Race the Sun
- Race to Freedom: The Underground Railroad ... racecar driver
- racecar driver ... racial ideologist
- racial ideology ... racing hovercraft
- racing jacket ... racism debate
- racism debate ... rack foot
- rack for dental burrs ... rack suite construction
- rack support ... racketeer
- racketeer ... ractopamine
- racy ... radar console
- radar console ... radar fix
- radar flight following ... radar picket ship
- radar picket station ... radar ringing
- radar room ... radar trace
- radar trace ... radar-warning device
- radarscope camera ... radial flow
- radial flow compressor ... radial pressure
- radial rigidity ... radially symmetric
- radially symmetric ... radiant flux density
- radiant heater ... radiate love
- radiate power ... radiation beam
- radiation beam ... radiation field
- radiation field ... radiation pattern envelope
- radiation physics ... radiator baffle plate
- radiator block ... radiator shield panel
- radiator shroud ... radical reaction
- radical reaction ... rading profits
- rading profits ... radio broadcasting receiver
- radio broadcasting receiver ... radio detector
- radio detonator ... radio graph
- radio hand transmitter ... radio license fee
- radio license fees ... radio path
- radio path ... Radio Regulations
- Radio Regulations ... radio sets
- radio sets ... radio transceiver
- radio transceiver installation ... radio-license scofflaw
- radio-mesh ... radiocommunication service monitor
- radiocommunication service monitor ... radiographic contrast
- radiographic equipment ... radiolocation-satellite service
- radiological check ... radiophobia
- radiophobia ... radiotherapy
- radiotherapy ... radium dust
- radium dust ... radon atoms
- radon atoms ... raffle
- raffle ... Ragdoll
- Rage ... ragged typesetting with hyphenation
- ragged voice ... ragout
- Ragoût ... rail against
- rail against ... rail protection cover
- rail replacement service ... railings
- raillery ... railroad connection
- railroad connection ... railroad line
- railroad line ... railroad tariff
- railroad tariff ... railway complex
- railway complex ... Railway Post Office
- Railway post office ... railway tariff
- railway telephone ... rain
- rain ... rain gutter
- rain gutter ... rainbow pitta
- rainbow shower ... rainfall region
- rainfall region ... rainy Saturday
- rainy Saturday ... raise sb.'s hackles
- raise the anchor ... raised floor installation
- Raised from the Ground ... raja
- raja ... rally balloon
- rally behind ... ram something into someone
- ram stoker ... Raman microscope
- Raman modulation spectroscopy , RMS ... ramble on about
- ramble on about ... Rambo: First Blood
- Rambo: First Blood Part II ... ramp-up
- ramp-up ... rampart
- rampart ... ranch
- ranch ... rancorous
- rancorous ... random distribution
- random distribution ... random scanning
- random scanning ... random-scan display
- random-scan display ... range finder
- range finder ... range of lost strata
- range of lost strata ... ranger
- ranger ... ranging
- ranging ... rank with
- rank with ... ransfer element
- ransfer element ... rant about
- rant about ... rape
- rape ... rapeseed
- rapeseed ... rapid set square
- rapid shallow respiration ... raposas
- rapped ... Raqqa
- rare ... rarefied
- rarefied ... rascally
- rascally ... rasp
- rasp ... raspberry sauce
- raspberry sherbet ... raster coordinate
- raster coordinate ... rat chinchilla
- rat chinchilla ... rat's tail
- rat's tail ... ratchet tooth
- ratchet wheel ... rate of convergence
- rate of decay ... rate of load application
- rate of price increase ... rated load
- rated load ... Ratface
- Rathausstrasse ... rating
- rating ... ration
- ration ... rationalist
- rationalist ... ratite bird
- ratite birds ... Rauschenberg
- Rautavaara's Case ... ravenous
- ravenous for power ... ravish
- ravish ... raw
- Raw ... raw skin
- raw soap ... Rawtenstall
- ray ... Raynes Park
- Raynham ... razorwire
- razzamatazz ... RC oscillator
- RC oscillator ... re-covered
- re-covered ... re-instatement
- re-introduction ... re-timing
- re-tool ... reach beyond sth.
- reach beyond sth. ... reach port
- reach rock bottom ... react upon
- react upon ... reaction
- reaction ... reaction-free amplifier
- reactionary ... reactive power meter
- reactive power relay ... reactor auxiliary building
- reactor building ... reactor start-up
- reactor trip ... read for
- read head ... read s.b.'s mind
- read s.o. like a book ... read-only memory
- read-only memory ... read-write memory
- read-write memory ... readily
- readily ... reading corner
- reading corner ... reading the cards
- reading the paper ... ready
- ready condition ... ready for the press
- ready for the press ... ready signal
- ready signal ... ready witted
- ready witted ... ready-to-eat
- ready-to-eat ... reagent
- reagent ... real estate activities
- real estate agency ... real man
- real memory ... real time
- real time ... real-estate dealer
- real-estate development ... real-time image generation
- real-time image generation ... reality
- reality ... really
- really ... realm
- realm ... ream sb.
- ream sb.'s ass ... reapeter
- reaping ... rear
- rear ... rear connecting pipe
- rear connecting pipe ... rear its ugly head again
- rear its ugly head again ... rear side
- rear side ... rear wiper
- rear wiper ... rearm
- rearm ... rearwards
- rearwards ... reason about
- reason about ... reason with
- reason with ... reasoning
- reasoning ... reassure
- reassure ... rebarbative
- rebarbative ... rebellious
- rebellious ... rebuild
- rebuild ... rebuilding
- rebuilding ... recalculation
- recalculation ... recantation
- recantation ... recede
- recede ... receipt printer
- receipt printer ... receive antenna
- receive antenna ... receive output
- receive part ... receiver cap
- receiver cap ... receiving equipment
- receiving equipment ... recent graduate
- recent graduate ... reception
- reception ... reception office
- reception output ... receptor-mediated
- receptors ... Rech
- rechargable ... recidivism
- recidivist ... reciprocal gamma function
- reciprocal heading ... reciprocate
- reciprocating combustion engine ... recirculation
- recirculation air blower ... Reckless
- reckless adventure ... reckon up
- reckon up ... recline
- recline ... recognizable
- recognizable ... recoil spring
- recoil-free ... recommend
- recommend ... recompense
- recompense ... reconcile
- reconcile ... recondite
- reconditeness ... reconnaissance
- reconnaissance area ... reconsider
- reconsider ... reconstruction
- reconstruction aid ... record block
- record carrier ... record libraries
- record library ... record structure
- record structure ... recording compression tester
- recording compression tester ... records
- records filing ... recover from
- recover from ... recovering
- recovering ... recovery vehicle
- recovery vehicle ... recreation village
- recreation village ... recruit
- recruit ... recruit workers
- recruitement agency ... recruitment
- recruitment ... rectal carcinoid
- rectal crisis ... rectangular repetition rate
- rectangular repetition rate ... rectification
- rectification of defects ... rectifier losses
- rectifier stack ... rectourethral fistula
- rectovaginal fistula ... recurrent
- recurrent code ... recursive call
- recursive call ... recycle
- recycle ... red amaranth
- Red American ... Red Branch Cycle
- red brass ... Red Crystal
- Red Crystal ... red filter
- red fingernails ... Red Gloves
- red gold jewellery ... red lilac
- red lily ... red oxide of zinc
- red oxide of zinc ... red sky
- red sky at night, shepherd's delight ... red wasp
- red wasp ... Red-bellied Macaw
- Red-bellied Macaw ... red-billed hanging parrot
- red-billed hanging parrot ... red-billed tropic bird
- red-billed tropic bird ... red-capped flowerpecker
- red-capped flowerpecker ... red-collared woodpecker
- red-collared woodpecker ... red-faced cormorant
- red-faced cormorant ... red-footed booby
- red-footed booby ... Red-Green alliance
- red-green blindness ... red-headed malimbe
- red-headed malimbe ... red-legged crake
- red-legged crake ... red-naped sapsucker
- red-naped trogon ... red-rumped parrot
- red-rumped swallow ... red-tailed amazon
- red-tailed antthrush ... red-throated piping guan
- red-throated piping guan ... red-wattled lapwing
- red-wine vinegar ... redden
- redden ... redeem
- redeem ... redelivery
- redemption ... redesigns
- redevelop ... rediscover
- rediscover ... redoubt
- redoubt ... reduce
- reduce ... reduced rate fare
- reduced tariff ... reducing
- reducing ... reduction
- reduction ... reduction catalytic converter
- reduction factor ... redundancy bit
- redundancy check ... Reece Fish carburettor
- Reece Fish carburettor ... reed-bunting
- reed-colored ... reef
- reef ... reefer container
- reefer container ship ... reek of petrol fumes
- reek of spirit ... reemerge
- reemerge ... reestablish
- reestablish ... referee
- referee ... reference color
- reference color ... reference input
- reference installation ... reference period
- reference periods ... reference transfer function
- reference transfer function ... refilling bottle
- refine ... reflate the economy
- reflation ... reflect upon
- reflect upon ... reflecting
- reflecting ... reflection factor
- reflection factor ... reflective
- reflective ... reflex neurovascular dystrophy , RND
- reflex optical sensor ... reform movements
- reform of the armed forces ... refracting power
- refracting telescopes ... refractory anemia with ringed sideroblasts , RARS
- refractory brick ... refresh indicator
- refresh memory ... refreshments
- refreshments ... refrigerating coil
- refrigerating compressor ... refuge
- refuge ... refugee from Iraq
- refugee from Iraq ... refurbish
- refurbishment ... refuse rock
- refuse rock ... regain
- regain ... regain strength
- regain strength ... regard
- regard as ... regency
- regency ... regenerative detector
- regenerative fuel cell , RFC ... Reggio
- Reggio nell'Emilia ... region sequence
- regional ... regional festival
- regional government ... regiopolis
- regisseur ... register sth.
- register sth. ... registered seat
- registered seats ... registrated user
- registrated user ... Regnier de Graaf
- regrades ... regret
- regret ... regrettable
- regrettable ... regulable
- regulable ... Regular maintenance is essential for the proper operation.
- Regular maintenance is essential for the proper operation. ... regular span
- regular span ... regulate
- regulate ... regulating wheel
- regulating wheel ... regulator tube
- regulatory ... regurgitation
- regurgitation ... rehearse
- reheat turbine ... Reichenbach's sunbird
- Reichenow's melidectes ... reimbursed
- reimbursed ... reincarnation
- reincarnation ... reinforce
- reinforce ... reinforcement carpet
- reinforcement carpet ... Reinhold Glière
- Reinhold Glière ... reinvigoration
- reinvigoration ... reiver
- reiver ... reject
- reject an appeal ... rejoin
- rejoin ... relate to sth.
- relate to sth. ... relating to allergology
- relating to an embryo ... relating to hypocholesterolaemia
- relating to hypocholesterolemia ... relating to pericoronitis
- relating to pericranitis ... relating to society as a whole
- relating to society as a whole ... Relations
- relations ... relative hysteresis coefficient
- relative hysteresis coefficient ... relative proportions
- relative proportions ... Relativistic plasma
- Relativistic stars ... relaxation oscillation
- relaxation oscillation ... relay board
- relay board ... relay core
- relay correlator ... relay line finder
- relay list ... relay retracting spring
- relay retracting spring ... relay-operated controller
- relaying ... release current
- release current ... release from
- release from ... release socket
- release spring ... released
- released ... relent
- relent ... relevant to security
- relevant to security ... reliable transfer server
- reliably ... relief collar
- relief flight ... relieved
- relieved ... reline
- reline ... relocating loader
- relocating loader ... reluctance
- reluctance ... remain in one's memory
- remain in one's memory ... remaining risk
- remaining risk ... remark
- remark ... remedial
- remedial gymnastics ... remembrance
- remembrance ... reminiscences
- reminiscences of one's travels ... remnants of uranium mining wastes
- remodel ... remote
- remote ... remote computing
- remote concentrator ... remote desktop protocol
- remote desktop protocol ... remote job entry protocol
- remote job entry protocol ... remote site
- remote site ... remotely
- remotely ... removable-head drum
- removable-head drum ... remove
- remove by etching ... removing of waste
- removing of waste ... removing of waste
- removing of waste ... remuneration
- remuneration ... Renaissance
- Renaissance ... renal cell carcinoma , RCC
- renal circulation ... renal papillae
- renal pedicle clamp ... renascent
- renascent ... render an explanation
- render an explanation ... rending rate
- rendition ... renew
- renew ... renewal of subscription
- renewal process ... renouncement
- renouncement ... renown
- renown ... rent payments
- rent payments ... rental parks for construction machines
- rental parks for construction machines ... reorganize
- reorganize ... repair
- repair ... repair orders
- repair part ... repatriate
- repatriate ... repayment
- repeal ... repeated
- repeated call attempt ... repeating machine
- repeating pistol ... repent
- repent ... repertory movie theater
- repetition ... repetitive transcranial magnetic stimulation, rTMS
- repetitive waveform ... replacement function
- replacement function ... replenishment
- replenishment ... replicator
- replicator ... report forms
- report generator ... reporter microphone
- reporter microphone ... repose trust in
- repose trust in ... represent oneself as
- represent oneself as ... representative species
- representative species ... reprise sth.
- reprise sth. ... reprobation
- reprobation ... reprogrammable read-only memory
- reprogrammable read-only memory ... reproving
- reproving ... Republican
- republican ... repulse
- repulse ... repulsiveness
- repulsiveness ... reputedly
- reputes ... request for service
- request for service ... request to send
- requester ... required work
- required work ... requital
- requital ... reroll
- reroll ... rescheduling
- rescheduling ... rescue coordination centre
- rescue costs ... rescue system
- rescue toboggan ... research blimp
- research blimp ... research gap
- research grant ... research objects
- research of racism ... research scientist
- research scientist ... research team
- research team ... researches
- researches ... resemblance
- resemblance ... resemble
- resemble ... resemble
- resemble ... reservation
- reservation ... reserve
- reserve ... reservist's rifle
- reservoir ... reset
- reset ... resettle
- resettle ... residence telephone
- residence telephone ... resident status
- resident status ... resider
- resider ... residual gas
- residual gas ... residual material
- residual material ... residual spurious
- residual spurious ... resign
- resign ... resiliences
- resiliences ... resin-free
- resin-free ... resistance coefficient
- resistance coupling ... resistance to glow heat
- resistance to incident radiation ... resistance-coupled amplifier
- resistance-coupled amplifier ... resistor pastes
- resistor wire ... resolute
- resolute ... resolute
- resolute ... resoluteness
- resoluteness ... resolving limit
- resolving limit ... resonance frequency meter
- resonance frequency meter ... resonant breaker loop
- resonant breaker loop ... resonate to
- resonate to ... resound
- resounding ... resourceful
- resourceful ... respective
- respective ... respiratory mask
- respiratory mask ... respire
- respire ... respondent
- respondent ... response
- response ... response value
- response voltage ... responsivness
- responsivness ... rest on
- rest on one's laurels ... restart point
- restart point ... resting wandering cell
- resting wandering cells ... Restoration
- restoration ... restoring to health
- restoring torque ... restrain oneself
- restrain oneself ... restricted list
- restricted list ... restrictive
- restrictive ... result in
- result in ... resume
- resume negotiations ... resurrect
- resurrect ... retail bookstores
- retail bookstores ... retail store
- retail store ... retained testis
- retained tooth ... retake
- retake ... retarder
- retarder ... retention
- retention ... rethink
- rethink ... reticulocytic sarcoma
- reticulocytic sarcoma ... Retinoblastoma protein
- Retinoblastoma protein ... retiring allowance
- retiring allowance ... retrace one's steps
- retrace one's steps ... retransformation
- retransformation ... retribution
- retribution ... retro-fittable
- retro-rocket ... retrofit kit
- retrofit kit ... retrogressive
- retrogressive ... retrourethral catheterisation
- retrouterine ... return address
- return address ... return flow
- return flow ... Return of the Lash
- Return of the Magnificent Seven ... return stroke , RS
- return the compliment ... return-flow restriction
- return-flow restriction ... reunion
- reunion ... rev-up
- rev-up ... revelation
- revelation ... revelry
- revelry ... revenue
- revenue case ... reverberation effect
- reverberation effect ... reverie
- reverie ... reverse bias
- reverse bias ... reverse conducting triode thyristor
- reverse conducting triode thyristor ... reverse idler gear bushing
- reverse idler gear bushing ... reverse polarity thyristor diode
- reverse power loss ... reverse scrolling
- reverse scrolling ... reverse video
- reverse voltage ... reversed image
- Reversed map ... reversible transducer
- reversible transducer ... reversing valve
- reversing valve ... review book
- review books ... revise
- revise ... revival
- revival ... revolt
- revolt ... revolting
- revolting ... revolution
- revolution ... revolutions per second
- revolve ... revolving desk chair
- revolving door effect ... reward card
- rewarding ... RF band
- RF band ... RF detector probe
- RF detector probe ... RF-proof
- RF-proof ... rhabdoviruses
- rhadinovirus ... Rhenish cuisine
- Rhenish mason's hammer ... rheumatic chorea
- rheumatic disease ... Rheurdt
- Rheydt ... rhinestone
- rhinestone ... rhinoptera
- rhinoscleroma ... rhodium-clad
- rhodium-plate ... rhomboid
- rhomboid antenna ... rhymed verse
- rhymester ... rhönrad
- RI : Rhode Island - Providence ... ribauldequin
- ribbed ... ribbon maker
- ribbon microphone ... ribonucleic acid , RNA
- ribosomal DNA ... rice in the husk
- rice in the husk ... rice table
- rice table ... rich in detail
- rich in detail ... Richelieu class battleship
- Richelieu class battleship ... rickshaw
- rickshaw ... riddance
- riddance ... ride on the knee
- ride on the knee ... Ride The High Country
- Ride the Man Down ... ridge piece
- ridge piece ... ridiculing
- ridiculing ... riding lesson
- riding lessons ... Riemann domain
- Riemann metric ... riffraff
- riffraff ... rift
- rift ... rigamarole
- rigamarole ... right angular
- right angular ... right handed system
- right handed system ... right of use
- right of use ... right to usufruct
- right to vote ... right-angled
- right-angled ... right-hand
- right-hand ... right-hand thread
- right-hand thread ... Righteous Kill
- righteous man ... rights
- rights ... rigid
- rigid ... rigid hull
- rigid hull ... rigors
- rigour ... rim gear
- rim lock ... rims sponge
- rims sponge ... ring back
- ring back ... ring electrode
- ring ferrule ... ring main
- ring mixer ... ring resonator
- ring retractor ... ring up
- ring up ... ring-shaped
- ring-shaped ... ringed snake
- ringed snake ... ringing machine
- ringing machine ... ringmaster
- Ringmaster ... Rio
- Rio 70 ... rip
- rip ... ripen
- ripen ... ripple carry
- ripple carry ... rise
- rise ... riser cable
- riser cable ... risk a trial of strength
- risk coverage ... risk potential
- risk provision ... ritropirronium bromide
- ritropirronium bromide ... riukiu scops owl
- riukiu scops owl ... river
- river ... River horses
- river island ... river warbler
- river warbler ... rivet arrangement
- rivet calculation ... riveting machine
- riveting machine ... RM cell
- RM cell ... RNG
- RNG ... road cones
- road cones ... road of destiny
- Road of Life ... road test
- road test ... roadability
- roadability ... roaming agreement
- roaming agreement ... roast
- roast ... roast slicer
- roast slicer ... rob
- rob ... robbery with violence
- robbery with violence ... robin
- robin ... robot assistant
- robot autonomy ... robotic arms
- robotic arms ... roboviruses
- roboviruses ... robust woodpecker
- robust woodpecker ... rock band
- rock band ... rock elegant
- Rock fall ... rock isle
- rock lice ... rock shag
- rock shell ... rockbound coast
- rockbound coast ... rocket base
- rocket blast ... rocket propulsion engine
- rocket propulsion engine ... rocking horse
- rocking horse ... rocky coast
- rocky coast ... Rococo theatre
- rococo-style skirt ... rodomont
- rodriguez brush warbler ... roentgenium isotope
- roentgenograph ... Rogers Park
- Rogowski coil ... roisterer
- Rokitansky's diverticulum ... roll angle
- roll angle ... roll of fat
- roll of fat ... roll sprinkled with poppy seeds
- roll sprinkled with salt ... roll-up
- roll-up ... rolled up
- rolled up ... roller contact pressure
- roller contact pressure ... roller shutter tape
- roller skate ... roller-cell pump
- roller-cell pump ... rolling
- rolling bearing ... Rolling Meadows
- Rolling Meadows ... rolling-contact bearing
- rolling-contact bearing ... ROM memory
- ROM memory ... Roman emperor
- Roman fennel ... Romance of a Horsethief
- Romance of the Rio Grande ... romantic
- romantic affair ... romp about
- romp about ... Romy and Michele's High School Reunion
- Rona Jaffe's Mazes and Monsters ... roof antenna
- roof antenna ... roof panel
- roof peak ... roofed over
- roofed over ... rooftruss
- rooftruss ... room and to spare
- room antenna ... room with s.o.
- room with s.o. ... root and branch
- root and branch ... root directory
- root element ... root segment
- root segment ... Roots supercharger
- Roots supercharger ... rope-a-dope
- rope-a-dope ... rosaite
- Rosales ... rose head
- rose head ... rose-faced parrot
- rose-field ... roselite
- Roselle ... rosewood
- rosewood ... Rossleben
- Rossleben ... rosy finch
- rosy finch ... rotary antenna
- rotary antenna ... rotary dial selection
- rotary dial selection ... rotary magazine
- rotary magazine ... rotary resolver
- rotary rheostat ... rotary-piston blower
- rotary-piston blower ... rotating beacon
- rotating bolt ... rotating loop antenna
- rotating loop antenna ... rotating-frame direction finder
- rotating-oscillating brush ... rotation spectrum
- rotation system ... rotational inertia
- rotational irradiation ... rotational shell
- rotational shell ... rotatory
- rotatory deformity ... rotogravure
- rotogravure printing ... rotten meat scandal
- rotten snatch ... rouble
- rouble ... rough copy
- rough copy ... Rough Rider State
- Rough Romance ... rough voice
- rough wool ... roughly equivalent
- roughly equivalent ... round
- round ... round head
- round head rivets ... round slide carburettor
- round steel chain ... round-coil measuring system
- round-down ... round-the-clock
- round-the-earth ... rounded-off
- rounded-off ... roundness
- roundness ... Route 66: An American Bad Dream
- route access protocol ... route tracing
- route tracing ... routing information protocol
- routing information protocol ... rove through
- rove through ... roving yarn
- roving yarn ... row of three
- row of three ... rower
- rowing ... ... Royal Bavarian State Railroad
- Royal Bavarian State Railroad ... Royal Household
- royal household ... royalty
- royalty ... RSI syndrome
- RSN : real soon now ... rub along with so.
- rub along with so. ... rub-marks
- rub-out ... rubber cap
- rubber care product ... rubber hammer
- rubber handle ... rubber policeman
- rubber policeman ... rubber-covered cable
- rubber-covered cable ... rubbers
- rubbers ... rubella
- rubella ... rubidium magnetometer
- rubidium magnetometer ... ruby laser
- ruby laser ... ruddy
- ruddy ... ruddy-headed goose
- ruddy-headed goose ... Rudy Vallée
- Rudy, the Racing Pig ... rufescent screech owl
- rufescent tiger heron ... rufous cachalote
- rufous chatterer ... rufous hummingbird
- rufous hummingbird ... rufous-backed honeyeater
- rufous-backed inca finch ... rufous-bellied seed snipe
- rufous-bellied thrush ... rufous-capped motmot
- rufous-capped motmot ... rufous-faced antpitta
- rufous-faced crake ... rufous-necked wood-rail
- rufous-necked wryneck ... rufous-tailed jungle flycatcher
- rufous-tailed parrot ... rufous-throated antcatcher
- rufous-throated antcatcher ... rufus nightjar
- rug ... ruin
- ruin ... rule of general application
- rule of luck ... ruler
- ruler line ... ruling family
- ruling family ... Rumania
- Rumania ... rumblings in the press
- rumblings in the press ... ruminative
- rummage ... rumormonger
- rumormonger ... run across
- run afoul of the law ... run back
- run back ... run into debts
- run into debts ... run of thread
- run of thread ... run rampant
- run rampant ... run through
- run through ... run with the hare and hunt with the hounds
- Run, Run, Joe! ... run-up on prices
- run-up period ... rung
- rung ... running battle
- Running Blind ... running knot
- running knot ... runoff election
- runout ... rup up a score
- rup up a score ... rupture
- rupture ... rural mansion
- rural municipality ... rush
- rush ... rush off
- rush off ... rush to
- rush to ... Russell Islands
- Russell Town ... russet-winged spadebill
- russet-winged spadebill ... Russian Roulette
- Russian ruble , RUB ... rust heap
- rust heap ... rustic
- rustic ... Rustlers' Rhapsody
- rustless ... rusty-bellied shortwing
- rusty-bellied shortwing ... ruta graveolens
- ruta graveolens ... ruthless
- ruthless ... ruwenzori turaco
- ruwenzori turaco ... Rydberg constant
- Rydberg constant ... Rätikon
- Rätikon ... Rüdnitz
- Rüdnitz ... Rüppell's warbler
