Source : Webster's Revised Unabridged Dictionary (1913)

Wanderoo \Wan`der*oo"\, n. [Cingalese wanderu a monkey.]
   (Zo["o]l.)
   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}.
   [Written also {ouanderoo}.]

   Note: The name is sometimes applied also to other allied
         species.