Alces machlis

from The Collaborative International Dictionary of English v.0.48
moose \moose\ (m[=oo]s), n. [A native name; Knisteneaux mouswah;
   Algonquin monse. Mackenzie.]
   1. (Zool.) A large cervine mammal ({Alces alces} syn. {Alces
      machlis}, syn {Alces Americanus}), native of the Northern
      United States and Canada. The adult male is about as large
      as a horse, and has very large, palmate antlers. It
      closely resembles the European elk, and by many Zoologists
      is considered the same species. See {Elk}.
      [1913 Webster]

   2. A member of the Progressive Party; a Bull Moose.
      [Obsolescent. Cant, from the early 1900's.]
      [Webster 1913 Suppl. +PJC]

   2. [capitalized] A member of the fraternal organization named
      Loyal Order of Moose.
      [PJC]

   {Moose bird} (Zool.), the Canada jayor whisky jack. See
      {Whisky jack}.

   {Moose deer}. Same as {Moose}.

   {Moose yard} (Zool.), a locality where moose, in winter, herd
      together in a forest to feed and for mutual protection.
      [1913 Webster]
    
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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