DuckCorp Dico

Found one definition

1.                 From WordNet (r) 3.0 (2006):
                   
   
   
                   
                     
   passer
       n 1: a person who passes by casually or by chance [syn:
            passerby, passer-by, passer]
       2: a person who passes as a member of a different ethnic or
          racial group
       3: a student who passes an examination
       4: (football) a ball carrier who tries to gain ground by
          throwing a forward pass [syn: passer, forward passer]
       5: type genus of the Passeridae [syn: Passer, genus Passer]