Cervus alces

from The Collaborative International Dictionary of English v.0.48
elk \elk\ ([e^]lk), n. [Icel. elgr; akin to Sw. elg, AS. eolh,
   OHG. elaho, MHG. elch, cf. L. alces; perh. akin to E. eland.]
   (Zo["o]l.)
   A large deer, of several species. The European elk {Alces
   alces} (formerly {Alces machlis} or {Cervus alces}) is
   closely allied to the American moose. The American elk, or
   wapiti ({Cervus Canadensis}) the largest member of the deer
   family, has large, spreading antlers and is closely related
   to the European stag. See {Moose}, and {Wapiti}.
   [1913 Webster +PJC]

   {Irish elk} (Paleon.), a large, extinct, Quaternary deer
      ({Cervus giganteus}) with widely spreading antlers. Its
      remains have been found beneath the peat of swamps in
      Ireland and England. See Illustration in Appendix; also
      Illustration of {Antler}.

   {Cape elk} (Zo["o]l.), the eland. elk
    

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