DuckCorp Dico

Found one definition

1.                 From WordNet (r) 3.0 (2006):
                   
   
   
                   
                     
   uncle
       n 1: the brother of your father or mother; the husband of your
            aunt [ant: aunt, auntie, aunty]
       2: a source of help and advice and encouragement; "he played
          uncle to lonely students"