/ Dictionary / Index G Grimaldi: Meaning and Definition of Find definitions for: Gri•mal•di Pronunciation: (gri-mäl'dē, -môl'-), [key] — n. 1779–1837, English actor, mime, and clown. a walled plain in the third quadrant of the face of the moon: about 120 mi. (195 km) in diameter. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. grimace Grimaldian Related Content Daily Word Quiz: stringent Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language