| clavichord | clavicordio |
| clavicle | clavícula |
| Clavicle fracture | Fractura de clavícula |
| clavicular | clavicular |
| claw | garra |
| claw hammer | martillo sacaclavos |
| Claw vending machine | Grúa de Habilidad |
| clay | arcilla |
| Clay animation | Claymation |
| Clay County | Condado de Clay |
| Clay court | Tierra batida |
| Clay Mathematics Institute | Clay Mathematics Institute |
| Clay minerals | Arcilla |
| clay pigeon | platillo |
| clay pigeon shooting | tiro al platillo |
| Clay Regazzoni | Clay Regazzoni |
| clayey | arcilloso |
| Clayface | Cara de Barro |
| claymore | espada escocesa |
| Clayton Antitrust Act | Ley Clayton Antitrust de los Estados Unidos de América |
| Clayton-Bulwer Treaty | Tratado Clayton-Bulwer |
| clean | limpiar |
| clean air area | zona de aire limpio |
| clean air car | vehículo ecológico |
| clean and jerk | dos tiempos |
| Clean method | Método de deconvolución |
| clean off | zamparse |
| clean out | limpiar |
| clean technology | tecnología limpia |
| clean up | rehabilitar |
| clean-cut | explícito |
| clean-shaven | bien afeitado |
| Cleander of Gela | Cleandro de Gela |
| cleaner | mujer de la limpieza |
| cleaner's | lavandería |
| cleaning | limpieza |
| cleaning lady | mujer de la limpieza |
| cleaning out | limpiado |
| cleaning up | limpieza |
| cleaning woman | mujer de la limpieza |
| cleanliness | pulcritud |
| cleanly | aseado |
| cleanness | pulcritud |
| cleanse | limpiar |
| cleanser | limpiador |
| cleansing | purgante |
| cleansing department | departamento de limpieza |
| cleanup | limpieza |
| clear | limpiar |
| clear away | quitar |
| clear lacquer | barniz |
| clear land | despoblar de árboles |
| clear off | limpiar |
| clear one's throat | carraspear |
| clear out | limpiar |
| clear through customs | despachar |
| clear up | limpiar |
| clear-cut | explícito |
| clear-headed | lúcido |
| clearance | despacho |
| clearance sale | liquidación |
| cleared up | alumbrado |
| clearing | claro |
| clearing house | banco de liquidación |
| clearing sludge | sedimento de limpieza |
| clearinghouse | banco de liquidación |
| clearly | expresamente |
| clearly outlined | determinado |
| clearness | claridad |
| clearsighted | clarividente |
| cleat | listón |
| cleats | botines de fútbol |
| cleavage | división |
| cleave | partirse |
| cleaver | cuchilla |
| clef | clave |
| Clefs | Clave |
| cleft | hendedura |
| cleft chin | barbilla partida |
| Cleft of venus | Cameltoe |
| cleft palate | fisura palatina |
| Cleinias | Clinias |
| Cleisthenes | Clístenes |
| Cleisthenes of Sicyon | Clístenes de Sición |
| Cleistocactus | Cleistocactus |
| Cleitarchus | Clitarco de Alejandría |
| Clem Burke | Clem Burke |
| clematis | clemátide |
| Clematis flammula | Clematis flammula |
| Clematis recta | Clematis recta |
| Clematis vitalba | Clematis vitalba |
| clemency | sufrimiento |
