scotch hearth

ore hearth

a small blast furnace for smelting lead.
Also called Scotch furnace, Scotch hearth.

1815–25 Unabridged

Scotch furnace

noun Metallurgy.
Also called Scotch hearth.

1890–95 Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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