| FEEDPIPE | • FEEDPIPE n. a pipe through which something is supplied to a machine or system, for instance steam to an engine, or oil to a tank. |
| FIPPENCE | • fippence n. (Britain, informal, dated) fivepence. • FIPPENCE n. (colloquial) fivepence, a coin worth five pence. |
| FLAPPERS | • flappers n. Plural of flapper. • FLAPPER n. a flighty young woman. |
| FLAPPIER | • flappier adj. Comparative form of flappy: more flappy. • FLAPPY adj. flapping. |
| FLIPPERS | • flippers n. Plural of flipper. • FLIPPER n. a flat limb for swimming e.g. turtle or penguin. |
| FLIPPEST | • flippest adj. Superlative form of flip: most flip. • FLIP adj. flippant. |
| FLIPPIER | • flippier adj. Comparative form of flippy: more flippy. • FLIPPY adj. flaring at the bottom. |
| FLOPPERS | • floppers n. Plural of flopper. • FLOPPER n. something or someone that flops. |
| FLOPPIER | • floppier adj. Comparative form of floppy: more floppy. • FLOPPY adj. soft and flexible. |
| FLOPPIES | • floppies n. Plural of floppy. • FLOPPY n. a type of computer disk. |
| FLYPAPER | • flypaper n. A strip of paper coated with a sticky, often poisonous, substance that catches and kills flies that land on it. • flypaper v. To cause something to become stuck with, or as if with, flypaper. • fly-paper n. Alternative form of flypaper. |
| FRIPPERS | • frippers n. Plural of fripper. • FRIPPER n. (archaic) one who deals in frippery or in old clothes, also FRIPPERER. |
| FRIPPERY | • frippery n. Ostentation, as in fancy clothing. • frippery n. Useless things; trifles. • frippery n. (Obsolete) Cast-off clothes. |
| FRIPPETS | • frippets n. Plural of frippet. • FRIPPET n. a frivolous or flamboyant young woman. |
| HALFPIPE | • halfpipe n. Alternative form of half-pipe. • half-pipe n. (Skateboarding, snowboarding, skiing, BMX, rollerskating, kickscootering, etc.) A structure used to… • half␣pipe n. Alternative form of half-pipe. |
| PETAFLOP | • petaflop n. (Computing) Either of two units of measure of the calculating speed of a computer… • PETAFLOP n. a unit of processing speed equal to 2 to the power of 50 floating-point operations per second. |
| PIPEFISH | • pipefish n. A small fish of the seahorse family, having a long thin body covered with partially ossified plates… • PIPEFISH n. any of numerous fishes having a long slender armoured body and a tubular snout. |
| PIPEFULS | • pipefuls n. Plural of pipeful. • PIPEFUL n. as much as a pipe can hold. |