What is the meaning of Stoker?

A person who stokes, especially one on a steamship or steam train, who stokes coal in the boilers.

A device for stoking a fire; a poker.

A device that feeds coal into a furnace, etc., automatically.

A person who pedals on the back of a tandem bicycle.

stoker, one who stokes fuel

agitator, one who sows division or discord

stoker (item)

Source: wiktionary.org