- Bighorn, Bighorn River - a river that flows from central Wyoming to the Yellowstone River in southern Montana
--1 is a kind of river
--1 is a part ofWyoming, Equality State, WY; Montana, Treasure State, MT - bighorn, bighorn sheep, cimarron, Rocky Mountain bighorn, Rocky Mountain sheep, Ovis canadensis - wild sheep of mountainous regions of western North America having massive curled horns
--2 is a kind of mountain sheep
--2 is a member of Ovis, genus Ovis