Source : Webster's Revised Unabridged Dictionary (1913)

Felis \Fe"lis\, n. [L., cat.] (Zo["o]l.)
   A genus of carnivorous mammals, including the domestic cat,
   the lion, tiger, panther, and similar animals.

Source : WordNet®

Felis
     n : type genus of the Felidae: true cats and most wildcats [syn:
          {genus Felis}]