fitter

noun4

1. •
   A person who fits or assembles something.

   • "They have gone past their sell-by date. But the fitters have done an amazing job keeping these units running for as long as they have. — 2021
2. •
   (informal) An epileptic.
3. •
   (historical) A person employed to find suitable music to accompany silent films.

   • For the fitter of film music in the silent era visual reference was the surest indicator of content. — 2012
4. •
   (UK, old-fashioned) A coal broker who conducts the sales between the owner of a coal pit and the shipper.