ˌalmond-ˈfurnace
[Corruption of Allemand or Almain, i.e. German, furnace.]
Name of a furnace used in the refining process to separate metals from cinders and other dross, and for the reduction of slag of litharge to lead.
| 1674 Ray Smelting Silver in Collect. 116 Another Furnace they have which they call an Almond Furnace. 1751 Chambers Cycl. s.v., The Almond-furnace, called also the sweep, is usually six feet high, four wide, and two thick; it is built of brick. |