| Vocable | Translation |
| boreus/borea/boreum, AO Adjective | northern, pertaining to north wind |
| borius/boria/borium, AO Adjective | northern, pertaining to north wind |
| bostrychus/bostrycha/bostrychum, AO Adjective | curled, in ringlets |
| botanicus/botanica/botanicum, AO Adjective | botanical |
| botruosus/botruosa/botruosum, AO Adjective | full of clusters |
| botryodes, botryodis M Adjective | in form of a cluster of grapes |
| bovarius/bovaria/bovarium, AO Adjective | of oxen/cattle, [forum boarium => cattle market a… |
| bovilis/bovile, bovilis M Adjective | of/connected with cattle |
| bovillus/bovilla/bovillum, AO Adjective | of/consisting of cattle/oxen/cows |
| bovinus/bovina/bovinum, AO Adjective | of/pertaining to cattle/oxen/cows |
| bracatus/bracata/bracatum, AO Adjective | wearing trousers, breeched |
| bracchialis/bracchiale, bracchialis M Adjective | of/connected with arm(s) |
| bracchiatus/bracchiata/bracchiatum, AO Adjective | having branches (tree), branched, wearing bracele… |
| bracchiolaris/bracchiolare, bracchiolaris M Adjective | pertaining to a leg muscle of a horse |
| braceus/bracea/braceum, AO Adjective | pertaining to trousers/breeches |
| brachialis/brachiale, brachialis M Adjective | of/connected with arm(s) |
| brachiatus/brachiata/brachiatum, AO Adjective | having branches (tree), branched, wearing bracele… |
| brachiolaris/brachiolare, brachiolaris M Adjective | pertaining to a leg muscle of a horse |
| bracilis/bracile, bracilis M Adjective | designed to be worn with trousers (e.g., girdle/b… |
| bractealis/bracteale, bractealis M Adjective | of thin plates of metal/gold-leaf/veneers, showy,… |
| bracteatus/bracteata/bracteatum, AO Adjective | gilded/gilt, covered with a (mere) veneer of gold… |
| Brasiliensis/Brasiliensa, Brasiliensis M Adjective | brazilian |
| bratteatus/bratteata/bratteatum, AO Adjective | gilded/gilt, covered with a (mere) veneer of gold… |
| bravialis/braviale, bravialis M Adjective | earning a prize/reward |
| breviarius/breviaria/breviarium, AO Adjective | in brief form, summary, abridged |
| breviculus/brevicula/breviculum, AO Adjective | very/rather short/small, quite brief (time) |
| breviloquens, breviloquentis M Adjective | concise, brief in expression, brief |
| breviloquis/breviloque, breviloquis M Adjective | short in speech, brief, concise, speaking briefly |
| breviloquus/breviloqua/breviloquum, AO Adjective | short in speech, brief, concise, speaking briefly |
| brevis/brevis/breve, AO Adjective | short, small, brief |