| BACKFALLS | • backfalls n. Plural of backfall. • BACKFALL n. a fall or throw on the back in wrestling. |
| BACKFIELD | • backfield n. (Sports) The rear part of the field of play, particularly. • backfield n. The players occupying this area. • BACKFIELD n. in American football, the backs collectively. |
| BACKFILES | • backfiles n. Plural of backfile. • BACKFILE n. the back numbers of a newspaper. |
| BACKFILLS | • backfills n. Plural of backfill. • backfills v. Third-person singular simple present indicative form of backfill. • back-fills n. Plural of back-fill. |
| BACKFIRED | • backfired v. Simple past tense and past participle of backfire. • BACKFIRE v. to go wrong. |
| BACKFIRES | • backfires n. Plural of backfire. • backfires v. Third-person singular simple present indicative form of backfire. • back␣fires n. Plural of back fire. |
| BACKFISCH | • backfisch n. A teenage or late-adolescent girl. • BACKFISCH n. (German) a young girl, a flapper. |
| BACKFLIPS | • backflips n. Plural of backflip. • BACKFLIP v. to perform a backward somersault. |
| BACKFLOWS | • backflows n. Plural of backflow. • BACKFLOW n. the action of flowing back towards a source. |
| BLACKFACE | • blackface n. (Uncountable) A style of makeup in which a non-black person blackens their face, usually in order to… • blackface n. (Countable) A sheep of the Scottish Blackface breed. • Blackface n. Alternative letter-case form of blackface (form of racist vaudeville entertainment). |
| BLACKFINS | • blackfins n. Plural of blackfin. • BLACKFIN n. a food fish, a kind of tuna. |
| BLACKFISH | • blackfish n. (Chiefly Scotland) The Atlantic salmon, Salmo salar, especially a female after spawning. • blackfish n. Any of various dark-coloured fish of the Old World, especially the rudderfish (Centrolophus niger). • blackfish n. A pilot whale, genus Globicephalus (occasionally also used for various other whales). |
| JACKFRUIT | • jackfruit n. A tree, Artocarpus heterophyllus, of the Moraceae family, which produces edible fruit. • jackfruit n. The large fruit from this tree. • jack-fruit n. Alternative spelling of jackfruit. |
| PACKFONGS | • PACKFONG n. (Chinese) a Chinese alloy of nickel, zinc, and copper, also PAKFONG, PAKTHONG, PAKTONG. |
| PACKFRAME | • PACKFRAME n. a light metal frame with shoulder straps, used for carrying heavy loads. |