stoker

Short definition from Wiktionary

Noun

1. 1
   A person who stokes, especially one on a steamship or steam train, who stokes coal in the boilers.
2. 2
   A device for stoking a fire; a poker.
3. 3
   A device that feeds coal into a furnace, etc., automatically.
4. 4
   A person who pedals on the back of a tandem bicycle.

Proper noun

1. 1
   A surname.