fireman

noun5

1. •
   Someone (especially male) who is skilled in the work of fighting fire.

   • By February 1944 there were over two thousand women employed at the Alabama Dry Dock and Shipbuilding Company [...]. There were also female firemen on almost every shipyard crane [...]. — 1993
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.

   • (the latter is informal)
   • The fireman's job was about to get very interesting; they had just run out of coal!
3. •
   A relief pitcher (reflecting the figurative analogy of rescuing the situation).
4. •
   An assistant on any locomotive, whether steam-powered or not.
5. •
   (historical) A safety inspector in coal mines.