passer

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}]

from The Collaborative International Dictionary of English v.0.48

Passer \Pass"er\, n.
   One who passes; a passenger.
   [1913 Webster] passerby