Source : Webster's Revised Unabridged Dictionary (1913)

Catamount \Cat"a*mount\, n. [Cat + mount; cf. Sp. gato mentes
   mountain cat.] (Zo["o]l.)
   The cougar. Applied also, in some parts of the United States,
   to the lynx.

Source : WordNet®

catamount
     n 1: short-tailed wildcats with usually tufted ears; valued for
          their fur [syn: {lynx}]
     2: large American feline resembling a lion [syn: {cougar}, {puma},
         {mountain lion}, {painter}, {panther}, {Felis concolor}]