/ Dictionary / Index M Mona Lisa*: Meaning and Definition of Find definitions for: Mo•na Li•sa Pronunciation: (mō'nu lē'su, lē'zu), [key] (Italian, La Gioconda), a portrait (1503?–05?) by Leonardo da Vinci. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Monaghan monandrous Related Content Daily Word Quiz: careening Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language