/ Dictionary / Index K knee pants: Meaning and Definition of Find definitions for: knee' pants" Pronunciation: [key] knee-length pants, esp. those formerly worn by boys considered too young to wear full-length trousers (often used as a term symbolizing youth): I haven't felt this way since I was in knee pants. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. kneepan kneepiece Related Content Daily Word Quiz: perspicacious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language