Source : Webster's Revised Unabridged Dictionary (1913)

Grivet \Griv"et\ (gr[i^]v"[e^]t), n. [Cf. F. grivet.] (Zo["o]l.)
   A monkey of the upper Nile and Abyssinia ({Cercopithecus
   griseo-viridis}), having the upper parts dull green, the
   lower parts white, the hands, ears, and face black. It was
   known to the ancient Egyptians. Called also {tota}.

Source : WordNet®

grivet
     n : white and olive green east African monkey with long white
         tufts of hair beside the face [syn: {Cercopithecus
         aethiops}]