fireman
Pronunciation:
/ˈfaɪəmən//ˈfaɪɹmən/noun
Definitions
Someone (especially one who is male) who is skilled in the work of fighting fire.
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.
By extension of the above, an assistant on any locomotive, whether steam-powered or not.
A relief pitcher.