| bunt | n. | reinforced part of fishing net where the catch is concentrated; bulging middle part of a sail | nautical | |
| bunting | n. | open worsted fabric used for making flags; thus, a flag or flags | ||
| burble | n. | (aeronautics) breakdown of smooth airflow into turbulence | ||
| burgage | n. | tenure of land in town belonging to the king or other lord, the tenants paying annual rent or service | ||
| burgee | n. | triangular flag or one having a triangular indentation leaving two tails | ||
| burgeon | v. | to begin to grow | ||
| burgonet | n. | light helmet for infantrymen with protective crest and cheek pieces | ||
| burin | n. | engraving tool for use on metal | ||
| burke | v. | to kill by suffocation or strangulation so as to leave no trace; to hush up | ||
| burlesque | n. | art form that inverts the usual mode of presenting material for comedic effect, giving gravitas to lesser subjects or treating vulgarly more dignified matter | ||
| burrnesha | n. | Balkan sworn virgins, women in parts of western Balkan regions who take an oath of celibacy and gain privileges otherwise available only to men | ||
| bursary | n. | college scholarship; institutional treasure, esp. for ecclesiastical institutions | British | |
| busby | n. | tall fur hat with colored cloth hanging down right side; tall bearskin hat | ||
| buskin | n. | half boot; thick-soled shoe worn by ancient Greek actors in tragedies, cothurnus; [fig.] tragedy, the style of tragedy | ||
| but and ben | n. | simple two-room cottage | architecture | |
| butt splice | n. | cylindrical crimp connector for electrical wiring, with a crimp at each end | ||
| buttle | v. | to act as a butler | ||
| butty | n. | 1 | buttered bread; sandwich | idiom |
| butty | n. | 2 | co-worker or work friend, esp. in colliery | |
| byre | n. | shed for cows | ||
| cachalot | n. | sperm whale | ||
| cachectic | adj. | of or pertaining to general malaise with malnutrition; related to a depraved habit or mind or feeling | ||
| cachinnation | n. | immoderate or loud laughter | ||
| cack-handed | adj. | clumsy, ham-fisted; left-handed | British | |
| cacodemon | n. | evil spirit; nightmare | ||
| cacoethes scribendi | n. | mania for writing | Latin | |
| cadastre | n. | property register used as basis for taxation | ||
| cadge | v. | to obtain through imposition upon one’s generosity or friendship | ||
| caducity | n. | infirmity of old age, senility; frailty, perishable nature of life | archaic | |
| cafard | n. | overwhelming depression | ||
| caftan | n. | loose-fitting, full-length garment with long wide sleeves, worn throughout the Middle East, the Maghreb, and parts of Asia | ||
| cairn | n. | mound of rough stones heaped up as a grave marker or landmark | ||
| caitiff | n. | base wretch, despicable or pitiful person | ||
| calash | n. | light carriage seating two or four persons. In Canada, a two-wheeled vehicle with a single seat for two, and space for the driver to sit on the splashboard. | ||
| calcareous | adj. | of or like chalk | ||
| calced | adj. | wearing shoes | ||
| calcimine | n. | whitewash | ||
| caldera | n. | deep basin formed by collapse of an ancient volcano | ||
| calenture | n. | tropical fever with delirium that often affected sailors | ||
| caliginous | adj. | dim, misty, obscure | archaic | |
| calipee | n. | food delicacy made from fatty substance immediately above lower shell of a tortoise | ||
| callipygian | adj. | having shapely buttocks | ||
| callow | adj. | immature; unworldly | ||
| calx | n. | fine powder left after calcining or burning a substance | ||
| camber | n. | slight arching | ||
| cambion | n. | child with one human and one demonic parent | ||
| camlet | n. | tough, waterproof cloth, usually of camel or goat hair | ||
| camp as a row of tents | adj. | flamboyantly effeminate | British | |
| campanile | n. | bell tower, often freestanding | ||
| campanology | n. | study of bells and their making, ringing, etc. |
