fireman

Short definition from Wiktionary

Noun

1. 1
   Someone (especially one who is male) who is skilled in the work of fighting fire.
2. 2
   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.
3. 3
   An assistant on any locomotive, whether steam-powered or not.
4. 4
   A relief pitcher (reflecting the figurative analogy of rescuing the situation).
5. 5
   A safety inspector in coal mines.

Proper noun

1. 1
   A surname.