firehole

English

Etymology

From fire +‎ hole.

Noun

firehole (plural fireholes)

1. (rail transport) An opening fitted with a door, giving access to the firebox of a steam locomotive, through which coal can be shovelled and the fire tended.
   • 1961 March, ""Balmore"", “Driving and firing modern French steam locomotives”, in Trains Illustrated, page 150:

     A rolling grate in two sections is fitted; there are two injectors and an A.C.F.I. pump, and the usual firehole door.