| butt | objetivo |
| butte | colina aislada |
| butter | mantequilla |
| butter dish | mantequera |
| butter fingers | manos de manteca |
| butter roll | bizcocho de mantequilla |
| Butter tea | Té con mantequilla |
| butter up | lisonjear |
| buttercup | ranúnculo |
| butterfingered | desmañado |
| butterfingers | torpe |
| Butterflies Are Free | Las mariposas son libres |
| butterfly | mariposa |
| Butterfly bush | Buddleja |
| Butterfly Cluster | Cúmulo de la Mariposa |
| Butterfly diagram | Diagrama de mariposa |
| Butterfly effect | Efecto mariposa |
| Butterfly orchid | Platanthera |
| butterfly stroke | estilo mariposa |
| Butterfly sword | Hu Die Dao |
| Butterleaf National Park | Parque Nacional Butterleaf |
| buttermilk | suero de leche |
| butternut squash | calabaza de nuez |
| Butters Stotch | Leopold Butters Stotch |
| butterscotch | caramelo de mantequilla |
| Butterworth filter | Filtro de Butterworth |
| buttery | mantecoso |
| butthurt | encabronado |
| buttock | nalga |
| buttocks | parte posterior |
| button | prendedor |
| Button cactus | Epithelantha |
| button mushroom | champiñón |
| button up | abrocharse |
| button-cell battery | pilas botón |
| buttonhole | ojal |
| buttress | apoyo |
| Butty | Sándwich |
| butyl | butilo |
| Butylated hydroxyanisole | BHA |
| Butylated hydroxytoluene | BHT |
| butylene | butileno |
| Butylscopolamine | Butilescopolamina |
| Buurgplaatz | Buurgplaatz |
| Buuz | Buuz |
| Buxa Tiger Reserve | Parque Nacional de Buxa |
| Buxaceae | Buxaceae |
| Buxales | Buxales |
| buxom | lozano |
| Buxus | Buxus |
| Buxus sempervirens | Buxus sempervirens |
| Buxus sempevirens | Buxus sempervirens |
| buy | compra |
| buy back | desempeñar |
| buy in | aprovisionarse de |
| Buy Nothing Day | Día de No Comprar Nada |
| buy off | sobornar |
| buy on credit | comprar a plazos |
| buy out | comprar la parte de |
| buy something outright | comprar algo al contado |
| buy through an installment plan | comprar a plazos |
| buy time | ganar tiempo |
| buy up | acaparar |
| buy-in | soporte |
| buyable | comprable |
| Buyei | Buyei |
| buyer | comprador |
| Buyer decision processes | Proceso de toma de decisiones del comprador |
| buying | compra |
| Buying inducement | Incentivos |
| buying spree | juerga de compras |
| buyout | adquisición |
| Buzau | Buzău |
| Buzkashi | Buzkashi |
| buzz | llamada |
| Buzz Cola | Buzz Cola |
| buzz off | irse |
| buzz-phrase | frase zumbona |
| buzzard | ratonero común |
| Buzzards | Buteo |
| Buzzcocks | Buzzcocks |
| buzzcut | corte militar |
| buzzer | bocina |
| Buzzer beater | Canasta sobre la bocina |
| buzzing | zumbido |
| buzzword | palabra de moda |
| Buzău | Buzău |
| Buzău County | Buzău |
| Buzău River | Río Buzău |
| BV photometry | Fotometría BV |
| BVE Trainsim | BVE Trainsim |
| BW | Arma biológica |
| BW star | Estrella BW |
| BWF World Championships | Campeonato Mundial de Bádminton |
| Bwin | Bwin Interactive Entertainment AG |
| Bwindi Impenetrable National Park | Parque Nacional de la Selva Impenetrable de Bwindi |
| BWV | BWV |
| by | al lado de |
| by a fluke | de casualidad |
| by accident | por equivocación |
| By acclamation | Por aclamación |
| by all means | absolutamente |
