| BARREFULL | • BARREFULL adj. full of obstructions, also BARFUL. |
| BARRELFUL | • barrelful n. As much as a barrel will hold. • barrelful n. A large amount. • BARRELFUL n. the contents of a barrel. |
| BERGFALLS | • bergfalls n. Plural of bergfall. • BERGFALL n. (German) a fall of mountain rock. |
| BIFILARLY | • bifilarly adv. In a bifilar manner. • BIFILAR adv. having two threads. |
| BRIMFULLY | • brimfully adv. In a brimful manner. • BRIMFULL adv. full to the brim. |
| BULLFROGS | • bullfrogs n. Plural of bullfrog. • BULLFROG n. a large frog. |
| FALLBOARD | • fallboard n. (Music) The hinged cover which protects the keyboard of a piano when not in use. • FALLBOARD n. a cover for a piano keyboard. |
| FIBERFILL | • fiberfill n. (US) A lightweight synthetic fiber used as insulation in clothing. • FIBERFILL n. (US) synthetic fibres used as a filling material, also FIBREFILL. |
| FIBREFILL | • fibrefill n. Alternative form of fiberfill. • FIBREFILL n. synthetic fibres used as a filling material, also FIBERFILL. |
| FIBRILLAE | • fibrillae n. Plural of fibrilla. • FIBRILLA n. (Latin) a small fibre, also FIBRIL. |
| FIBRILLAR | • fibrillar adj. (Not comparable) Of or pertaining to fibrils. • fibrillar adj. Having the characteristics of fibrils. • FIBRILLAR adj. relating to a fibril, also FIBRILAR, FIBRILLARY. |
| FIBRILLIN | • fibrillin n. A glycoprotein present in human skin, necessary for forming the elastic fibres in connective tissue. • FIBRILLIN n. a protein found in connective tissue. |
| FILTRABLE | • filtrable adj. Alternative form of filterable. • FILTRABLE adj. capable of being filtered, also FILTERABLE. |
| FIREBALLS | • fireballs n. Plural of fireball. • FIREBALL n. a luminous meteor. |
| FORKBALLS | • forkballs n. Plural of forkball. • FORKBALL n. a breaking pitch in baseball. |
| FOURBALLS | • fourballs n. Plural of fourball. • four-balls n. Plural of four-ball. • FOURBALL n. a golf game for four golfers in teams of two. |
| KORFBALLS | • korfballs n. Plural of korfball. • KORFBALL n. (Dutch) a basketball-like game played between two teams of six men and six women each. |