/ Dictionary / Index K knuckle-duster: Meaning and Definition of Find definitions for: knuck•le-dust•er Pronunciation: (nuk'ul-dus"tur), [key] — n. See Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: knuckle-duster (Thesaurus) knucklebone knucklehead Related Content Daily Word Quiz: cautious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language