\Man"drill\, n. [Cf. F. mandrille, Sp. mandril, It.
mandrillo; prob. the native name in Africa. Cf. {Drill} an
ape.] (Zo["o]l.)
a large West African baboon ({Cynocephalus, or Papio,
mormon}). The adult male has, on the sides of the nose,
large, naked, grooved swellings, conspicuously striped with
blue and red.