| BOXFISH | • boxfish n. Any of the family Ostraciidae of often colorful, squared, bony fishes. • boxfish n. Certain species in Ostraciidae, principally in genus Ostracion. • BOXFISH n. any one of several species of fishes of the genus Ostracion, aka trunkfish. |
| FIREBOX | • firebox n. (Rail transport) The chamber of a steam engine, or a steam locomotive, in which the fuel is burned. • firebox n. The part of a fireplace where the fuel is burned. • firebox n. (Vulgar) A redheaded woman or her red pubic hair. |
| FLEXION | • flexion n. The act of bending a joint, especially a bone joint; the counteraction of extension. • flexion n. The state of being bent or flexed. • flexion n. Deviation from straightness. |
| FLUXION | • fluxion n. (Obsolete, mathematics) The derivative of a function. • fluxion n. (Rare or archaic) The action of flowing. • fluxion n. (Rare or archaic) A difference or variation. |
| FOXFIRE | • foxfire n. (Mycology, chiefly US) Bioluminescence created by some types of fungus, particularly those growing on rotting wood. • foxfire n. (By extension, loosely) Wood exhibiting fungal bioluminescence; torchwood. • fox-fire n. Alternative form of foxfire. |
| FOXFISH | • foxfish n. A fox shark or sea fox. • foxfish n. A common dragonet (Callionymus lyra), of European waters. • foxfish n. An Australian fish, Bodianus frenchii, and related species. |
| FOXIEST | • foxiest adj. Superlative form of foxy: most foxy. • FOXY adj. like a fox, crafty. |
| FOXINGS | • foxings n. Plural of foxing. • FOXING n. the act of a person who foxes. |
| FOXLIKE | • foxlike adj. Like a fox. • FOXLIKE adj. resembling a fox in his characteristic qualities; cunning. |
| FOXSHIP | • foxship n. The character or qualities of a fox; foxiness; craftiness; cunning. • foxship n. (Used as a mock title) The fox. • FOXSHIP n. (Shakespeare) craftiness. |
| FOXSKIN | • foxskin n. The pelt of a fox. • FOXSKIN n. the skin of a fox. |
| FOXTAIL | • foxtail n. The tail of a fox. • foxtail n. A dry spikelet or spikelet seed and flower cluster of some grasses. • foxtail n. A plant having a part resembling the tail of a fox or such spikelet. |
| POSTFIX | • postfix v. (Transitive) To suffix. • postfix v. (Biology) To subject a sample to postfixation. • postfix n. (Chiefly computing) Suffix. |
| SEXFOIL | • sexfoil n. (Heraldry) A stylized flower or leaf with six lobes. • sexfoil adj. Having six lobes. • SEXFOIL n. an ornamental design having six leaves or petals radiating from a common centre. |
| SIXFOLD | • sixfold adj. Having six component parts. • sixfold adv. Times six, multiplied by six. • SIXFOLD adj. being six times as great as. |