The Collaborative International Dictionary of English v.0.48:

Gavial \Ga"vi*al\ (g[=a]"v[i^]*al), n. [Hind. gha[.r]iy[=a]l:
   cf. F. gavial.] (Zool.)
   A large Asiatic crocodilian (Gavialis Gangeticus); --
   called also nako, and Gangetic crocodile.
   [1913 Webster]

   Note: The gavial has a long, slender muzzle, teeth of nearly
         uniform size, and feet completely webbed. It inhabits
         the Ganges and other rivers of India. The name is also
         applied to several allied fossil species.
         [1913 Webster] Gavot

WordNet (r) 3.0 (2006):

gavial
    n 1: large fish-eating Indian crocodilian with a long slender
         snout [syn: gavial, Gavialis gangeticus]