/ Dictionary / Index K knapsack: Meaning and Definition of Find definitions for: knap•sack Pronunciation: (nap'sak"), [key] — n. a canvas, nylon, or leather bag for clothes, food, and other supplies, carried on the back by soldiers, hikers, etc. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: knapsack (Thesaurus) knap knapsack problem Related Content Daily Word Quiz: lyceum Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language