A Passer

1. One who succeeds in passing a test, etc.
2. One who passes something along; a distributor.
3. (sports) Someone who passes, someone who makes a pass.
   1. (American football) A football player who makes a forward pass, who may be (but not limited to) the quarterback.
4. (chess) A passed pawn.
5. (archaic) One who passes; a passer-by.
6. (sociology) One who is able to "pass", or be accepted as a member of a race, sex or other group to which society would not otherwise regard them as belonging.