Source : Webster's Revised Unabridged Dictionary (1913)

Gorilla \Go*ril"la\, n. [An African word; found in a Greek
   translation of a treatise in Punic by Hanno, a Carthaginian.]
   (Zo["o]l.)
   A large, arboreal, anthropoid ape of West Africa. It is
   larger than a man, and is remarkable for its massive skeleton
   and powerful muscles, which give it enormous strength. In
   some respects its anatomy, more than that of any other ape,
   except the chimpanzee, resembles that of man.

Source : WordNet®

gorilla
     n : largest anthropoid ape; terrestrial and vegetarian; of
         forests of central west Africa [syn: {Gorilla gorilla}]