The Collaborative International Dictionary of English v.0.48:

Leopard \Leop"ard\ (l[e^]p"[~e]rd), n. [OE. leopart, leparde,
   lebarde, libbard, OF. leopard, liepart, F. l['e]opard, L.
   leopardus, fr. Gr. leo`pardos; le`wn lion + pa`rdos pard. See
   Lion, and Pard.] (Zool.)
   A large, savage, carnivorous mammal (Felis leopardus). It
   is of a yellow or fawn color, with rings or roselike clusters
   of black spots along the back and sides. It is found in
   Southern Asia and Africa. By some the panther (Felis
   pardus) is regarded as a variety of leopard.
   [1913 Webster]

   Hunting leopard. See Cheetah.

   Leopard cat (Zool.) any one of several species or varieties
      of small, spotted cats found in Africa, Southern Asia, and
      the East Indies; esp., Felis Bengalensis.

   Leopard marmot. See Gopher, 2.
      [1913 Webster]

WordNet (r) 3.0 (2006):

Felis bengalensis
    n 1: small spotted wildcat of southern Asia and Malaysia [syn:
         leopard cat, Felis bengalensis]