/ Dictionary / Index K Key lime: Meaning and Definition of Find definitions for: Key' lime' Pronunciation: [key] a yellow lime with a bitter rather than sour taste. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. key light Key lime pie Related Content Daily Word Quiz: philtrum Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language