furnace

tulipesä, uuni puhekieltä An industrial heating device, e.g. for smelting metal or baking ceramics.
puhekieltä A device that provides heat for a building; a space heater.
puhekieltä Any area that is excessively hot.
puhekieltä A place or time of punishment, affiction, or great trial; severe experience or discipline.
(circa) William Tyndale, (w), s:Bible (Tyndale)/DeuteronomyChapter 4|Deuteronomy 4:20:

For the Lorde toke you and broughte you out of the yernen fornace of Egipte, to be vnto him a people of enheritaunce, as it is come to passe this daye.