An industrial heating device, such as for smelting metal or firing ceramics.
(ux)
A device that provides heat for a building.
(cot)
Any area that is excessively hot.
A place or time of punishment, affliction, or great trial; severe experience or discipline.
(RQ:Tyndale Pentateuch)
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To heat in a furnace.
To exhale like a furnace.