/ Dictionary / Index M mandrill: Meaning and Definition of Find definitions for: man•drill Pronunciation: (man'dril), [key] — n. a large baboon, Mandrillus (or Papio) sphinx, of western Africa, the male of which has a face brightly marked with blue and scarlet and a muzzle that is ribbed: an endangered species. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: mandrill (Thesaurus) mandrel manducate Related Content Daily Word Quiz: portent Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language