/ Dictionary / Index M macaco: Meaning and Definition of Find definitions for: ma•ca•co Pronunciation: (mu-kä'kō, -kā'-), [key] — pl. -cos. any of several lemurs, as Lemur macaco. macaque. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. macabre macadam Related Content Daily Word Quiz: overture Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language