DuckCorp Dico

Found one definition

1.                 From WordNet (r) 3.0 (2006):
                   
   
   
                   
                     
   smile
       n 1: a facial expression characterized by turning up the corners
            of the mouth; usually shows pleasure or amusement [syn:
            smile, smiling, grin, grinning]
       v 1: change one's facial expression by spreading the lips, often
            to signal pleasure
       2: express with a smile; "She smiled her thanks"