Webster's Revised Unabridged Dictionary · 1913

Wanderoo

Wanderoo , noun

[Cingalese wanderu a monkey.]

(Zoology) A large monkey (Macacus silenus) native of Malabar. It is black, or nearly so, but has a long white or gray beard encircling the face. Called also maha, silenus, neelbhunder, lion-tailed baboon, and great wanderoo.

The name is sometimes applied also to other allied species.