The Collaborative International Dictionary of English v.0.48:

Eland \E"land\, n. [D. eland elk, of Slav. origin; cf. Pol.
   jelen stag, Russ. ol['e]ne, Lith. elnis; perh. akin to E.
   elk.]
   1. (Zo["o]l.) A species of large South African antelope
      (Oreas canna). It is valued both for its hide and flesh,
      and is rapidly disappearing in the settled districts; --
      called also Cape elk.
      [1913 Webster]

   2. (Zo["o]l.) The elk or moose.
      [1913 Webster]

WordNet (r) 3.0 (2006):

eland
    n 1: either of two large African antelopes of the genus
         Taurotragus having short spirally twisted horns in both
         sexes