bighorn sheep

from WordNet (r) 3.0 (2006)

bighorn sheep
    n 1: wild sheep of mountainous regions of western North America
         having massive curled horns [syn: {bighorn}, {bighorn
         sheep}, {cimarron}, {Rocky Mountain bighorn}, {Rocky
         Mountain sheep}, {Ovis canadensis}]

from The Collaborative International Dictionary of English v.0.48

Bighorn \Big"horn`\, n. (Zool.)
   The Rocky Mountain sheep ({Ovis montana} or {Caprovis
   montana}); called also {bighorn sheep}.
   [1913 Webster]

[email protected]