Source : Webster's Revised Unabridged Dictionary (1913)

Crouton \Crou`ton"\ (kr??`t?n"), n. [F. cro?ton, fr. cro?te a
   crust.] (Cookery)
   Bread cut in various forms, and fried lightly in butter or
   oil, to garnish hashes, etc.

Source : WordNet®

crouton
     n : a small piece of toasted or fried bread; served in soup or
         salads