furnace (plural furnaces)
- (Britain) An industrial heating device, e.g. for smelting metal or baking ceramics.
- (US, Canada) A device that provides heat for a building; a space heater.
- (colloquial) Any area that is excessively hot.
- (figuratively) A place or time of punishment, affliction, or great trial; severe experience or discipline.
device for heating — see oven
device for heating in a factory, melting metals, etc
device for heating a building