Bighorn
     n 1: a river that flows from central Wyoming to the Yellowstone
          River in southern Montana [syn: {Bighorn River}]
     2: wild sheep of mountainous regions of western North America
        having massive curled horns [syn: {bighorn sheep}, {cimarron},
         {Rocky Mountain bighorn}, {Rocky Mountain sheep}, {Ovis
        canadensis}]
Source: WordNet® 2.0