Source : Webster's Revised Unabridged Dictionary (1913)

Wapiti \Wap"i*ti\, n. [Probably the Iroquois name. Bartlett.]
   (Zo["o]l.)
   The American elk ({Cervus Canadensis}). It is closely related
   to the European red deer, which it somewhat exceeds in size.

   Note: By some writers it is thought to be a variety of the
         red deer, but it is considered a distinct species by
         others. It is noted for the large, branching antlers of
         the male.

Source : WordNet®

wapiti
     n : large North American deer with large much-branched antlers
         [syn: {American elk}, {Cervus canadensis}]