| BACKFIELDS | • backfields n. Plural of backfield. • BACKFIELD n. in American football, the backs collectively. |
| BACKFILES | • backfiles n. Plural of backfile. • BACKFILE n. the back numbers of a newspaper. |
| BACKFILLINGS | • backfillings n. Plural of backfilling. • BACKFILLING n. the act of refilling with earth. |
| BACKFILLS | • backfills n. Plural of backfill. • backfills v. Third-person singular simple present indicative form of backfill. • back-fills n. Plural of back-fill. |
| BACKFLIPPINGS | • BACKFLIPPING n. the act of performing a reverse somersault. |
| BACKFLIPS | • backflips n. Plural of backflip. • BACKFLIP v. to perform a backward somersault. |
| BACKLIFTS | • backlifts n. Plural of backlift. • BACKLIFT n. the backwards lifting of a bat. |
| 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). |
| BLACKFISHES | • blackfishes n. Plural of blackfish. • BLACKFISH n. a colloquial name for various species of fish. |
| BLACKFLIES | • blackflies n. Plural of blackfly. • BLACKFLY n. a biting fly. |
| BRICKFIELDERS | • brickfielders n. Plural of brickfielder. • BRICKFIELDER n. a hot dry wind in Australia. |
| BRICKFIELDS | • brickfields n. Plural of brickfield. • BRICKFIELD n. a brickyard. |
| FARKLEBERRIES | • farkleberries n. Plural of farkleberry. • FARKLEBERRY n. a shrub with hard, black berries. |
| FIDDLEBACKS | • fiddlebacks n. Plural of fiddleback. • FIDDLEBACK n. a wavy grain found in some woods commonly used for the manufacture of violins. |
| FLASHBACKING | • flashbacking v. Present participle of flashback. • FLASHBACK v. to show a flashback. |
| FLIPBOOKS | • flipbooks n. Plural of flipbook. • flip␣books n. Plural of flip book. • FLIPBOOK n. a book of a series of images that when flipped give the illusion of movement. |
| LIFTBACKS | • liftbacks n. Plural of liftback. • LIFTBACK n. a motorcar with a sloping rear door; a hatchback. |