an enclosed apparatus with a fire, used for heating metals, making glass etc in a factory
heating mechanism
Cases of word usage
1) (a part of) a stove, furnace etc producing flames (burner)
2) a workshop where metals are heated and shaped, especially one used for making shoes for horses; (a workshop with) a furnace for melting metal; to make a copy of (e.g. a signature, banknote, will) in order to deceive (forge)
3) a furnace or oven used for baking or drying (especially pots, bricks) (kiln)
4) to put coal etc on the fire of an engine, furnace etc (stoke)