'Bighorn' definitions:

Definition of 'Bighorn'

(from WordNet)
noun
A river that flows from central Wyoming to the Yellowstone River in southern Montana [syn: Bighorn, Bighorn River]
noun
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]

Definition of 'Bighorn'

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