Gibbon \Gib"bon\, n. [Cf. F. gibbon.] (Zool.)
   Any arboreal ape of the genus {Hylobates}, of which many
   species and varieties inhabit the East Indies and Southern
   Asia. They are tailless and without cheek pouches, and have
   very long arms, adapted for climbing.

   Note: The white-handed gibbon ({Hylobates lar}), the crowned
         ({H. pilatus}), the wou-wou or singing gibbon ({H.  agilis}), the siamang, and the hoolock. are the most
         common species.
         
[1913 Webster]