Someone (especially one who is male) who is skilled in the work of fighting fire.
A safety inspector in coal mines.
An assistant on any locomotive, whether steam-powered or not.
A relief pitcher (reflecting the figurative analogy of rescuing the situation).
A person (originally a man) who keeps the fire going underneath a steam boiler (originally, shoveling coal by hand), particularly on a railroad locomotive or steamship.
One who succeeds in passing a test, etc.
A passed pawn.
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.
One who passes something along; a distributor.
Someone who passes, someone who makes a pass.
A football player who makes a forward pass, who may be (but not limited to) the quarterback.