/ Dictionary / Index K knockoff: Meaning and Definition of Find definitions for: knock•off Pronunciation: (nok'ôf", -of"), [key] — n. an act or instance of knocking off. an unlicensed copy of something, esp. fashion clothing, intended to be sold at a lower price than the original. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: knockoff (Thesaurus) knock-knee knock-on effect Related Content Daily Word Quiz: tactful Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language