/ Dictionary / Index L leap day: Meaning and Definition of Find definitions for: leap' day" Pronunciation: [key] February 29: the extra day added to the Gregorian calendar in leap year. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. leap leapfrog Related Content Daily Word Quiz: procrastinate Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language