auxiliary boiler, donkey boiler - (nautical) an extra boiler (as a ship's boiler that is used while the ship is in port)

boilerplate - thick plate iron used in the production of boilers

heating plant, heating system, heating, heat - utility to warm a building; "the heating system wasn't working"; "they have radiant heating"

steam engine - external-combustion engine in which heat is used to raise steam which either turns a turbine or forces a piston to move up and down in a cylinder

steam whistle - a whistle in which the sound is produced by steam; usually attached to a steam boiler

vessel - an object used as a container (especially for liquids)