n. One who is deficient in intellect; a weak-minded or idiotic person.n. One who is deficient in judgment or sense; a silly or stupid person; one who manifests either habitual or occasional lack of discernment or common sense: chiefly used as a term of disparagement, contempt, or self-depreciation.n. One who counterfeits mental weakness or folly; a professional jester or buffoon; a retainer dressed in motley, with a pointed cap and bells on his head, and a mock scepter or bauble in his hand, formerly kept by persons of rank for the purpose of making sport. See bauble.n. Figuratively, a tool, toy, sport, butt, or victim: as, to be the fool of circumstances.n. A wanton, bad, or wicked person.n. A conical paper cap which dunces at school are sometimes compelled to wear by way of punishment.n. To act like one void of understanding.n. Synonyms and Simpleton, ninny, dolt, witling, blockhead. driveler.n. Harlequin, clown, jester. See zany.Foolish; silly.To play the fool; act like a weak-minded or foolish person; potter aimlessly or mischievously; toy; trifle.To play the buffoon; act as a fool or jester.To make a fool of; expose to contempt; disappoint; deceive; impose on.To make foolish; infatuate.To beguile; cheat: as, to fool one out of his money.n. A light paste of flour and water, like pie-crust.n. A sort of custard; a dish made of fruit crushed and scalded or stewed and mixed with whipped cream and sugar: as, gooseberry fool.