Source : Webster's Revised Unabridged Dictionary (1913)

Crocodilia \Croc`o*dil"i*a\ (-d?l"?-?), n. pl. [NL., fr. L.
   crocodilus crocodile.] (Zo["o]l.)
   An order of reptiles including the crocodiles, gavials,
   alligators, and many extinct kinds.

Source : WordNet®

Crocodilia
     n : crocodiles; alligators; caimans; gavials [syn: {Crocodylia},
          {order Crocodylia}, {order Crocodilia}]