| buquê | flower arrangement |
| buraco | gap |
| buraco da fechadura | keyhole |
| buraco de ar | air pocket |
| Buraco de verme | Wormhole |
| buraco em meia | spud (AUS) |
| buraco negro | black hole |
| Buraco negro carregado | Charged black hole |
| Buraco negro em rotação | Kerr black hole |
| Buraco negro primordial | Primordial black hole |
| buraco negro supermassivo | supermassive black hole |
| Buraco-de-minhoca | Wormhole |
| buracos escavados | excavated hole |
| Buran | Buran |
| Buraq | Buraq |
| Burca | Burqa |
| Burdigaliano | Burdigalian |
| Burdur | Burdur Province |
| Bureau International des Expositions | Bureau of International Expositions |
| bureta | burette |
| Burgas | Burgas |
| Burgebrach | Burgebrach |
| Burgenland | Burgenland |
| Burgenlandkreis | Burgenlandkreis |
| Burghaslach | Burghaslach |
| Burgheim | Burgheim |
| Burgistein | Burgistein |
| Burgkunstadt | Burgkunstadt |
| burgo | burg |
| Burgoberbach | Burgoberbach |
| burgomestre | burgomaster |
| burgos | boroughs |
| burgrave | burggrave |
| Burgrieden | Burgrieden |
| Burgstetten | Burgstetten |
| Burgthann | Burgthann |
| burguesa | middle-class woman |
| burguesia | bourgeoisie |
| burguesia compradora | comprador bourgeoisie |
| Burgui | Burgui - Burgi |
| burguês | bourgeois |
| Burgwalde | Burgwalde |
| Burgwindheim | Burgwindheim |
| Burgúndios | Burgundians |
| Burhanpur | Burhanpur |
| Burhou | Burhou |
| Buri Ram | Buriram Province |
| Buriates | Buryats |
| Buriatia | Buryatia |
| Buril | Caelum |
| burilaria | to upsetbureaucracy |
| Buriti | Moriche Palm |
| Buriácia | Buryatia |
| Burj Al Arab | Burj Al Arab |
| Burj Dubai | Burj Dubai |
| Burjassot | Burjassot |
| Burkhard Heim | Burkhard Heim |
| Burkina Faso | Burkina Faso |
| burla | swindle |
| Burlada | Burlada |
| Burladingen | Burladingen |
| burlar | cheat |
