Source : Webster's Revised Unabridged Dictionary (1913)

Omelet \Om"e*let\, n. [F. omelette, OF. amelette, alumete,
   alumelle, perh. fr. L. lamella. Cf. {Lamella}.]
   Eggs beaten up with a little flour, etc., and cooked in a
   frying pan; as, a plain omelet.

Source : WordNet®

omelet
     n : beaten eggs or an egg mixture cooked until just set; may be
         folded around e.g. ham or cheese or jelly [syn: {omelette}]