/ Dictionary / Index D duff: Meaning and Definition of Find definitions for: duff Pronunciation: (duf), [key] — n. Slang. the buttocks or rump: If you don't like the way things are, get off your duff and do something about it! duff Pronunciation: (duf), [key] — n. a stiff flour pudding, boiled or steamed and often flavored with currants, citron, and spices. duff Pronunciation: (duf), [key] — v.t. Slang. to give a deliberately deceptive appearance to; misrepresent; fake. (in golf&hasp;) to misplay (a golf ball), esp. to misjudge one's swing so that the club strikes the ground behind the ball before hitting it. to steal (cattle). (formerly) to alter the brand on (stolen cattle). to cheat someone. duff Pronunciation: (duf), [key] — n. organic matter in various stages of decomposition on the floor of the forest. fine, dry coal, esp. anthracite. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: duff (Thesaurus) Dufay duffel Related Content Daily Word Quiz: immense Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language