[four corners] {n.} All parts of a place. * /People came […]

[four-eyes] {n.}, {slang} A person who wears glasses. - A rude […]

[four-leaf clover] {n.} A small green plant with four leaves which […]

[fourth class] {n.} A class of mail that is not sealed […]

[fourth world] {n.}, {informal} The poor nations of the world, as […]

[fox and geese] {n. phr.} A tag game in which the […]

[fraidy-cat] or [fraid-cat] or [scaredy-cat] or [scared cat] {n.}, {informal} A […]

[frame of mind] {n. phr.} One's mental outlook; the state of […]

[freak] {n.}, {slang} 1. A good, or well-liked person, the opposite […]

[freak-out] (1) {n.}, {slang} An act of losing control; a situation […]