A quadrumanous mammal, esp. of the family Simiadae, having
   teeth of the same number and form as in man, and possessing neither a
   tail nor cheek pouches. The name is applied esp. to species of the
   genus Hylobates, and is sometimes used as a general term for all
   Quadrumana. The higher forms, the gorilla, chimpanzee, and ourang, are
   often called anthropoid apes or man apes.