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Entry 3 senses · 2 variants Webster, 1913

Furnace

/fẽrn'-əs/ · Fur·nace · IPA /ˈfɝnɪs/
01 n. An inclosed place in which heat is produced by the combustion of fuel, as for reducing ores or melting metals, for warming a house, for bak…
  1. 1.
    An inclosed place in which heat is produced by the combustion of fuel, as for reducing ores or melting metals, for warming a house, for baking pottery, etc.; as, an iron furnace; a hot-air furnace; a glass furnace; a boiler furnace, etc.
  2. 2.
    A place or time of punishment, affiction, or great trial; severe experience or discipline.
Phrases & compounds
Bustamente furnace — a shaft furnace for roasting quicksilver ores.
Furnace bridge — Same as Bridge wall.
Furnace cadmiam — the oxide of zinc which accumulates in the chimneys of furnaces smelting zinciferous ores.
Furnace hoist — a lift for raising ore, coal, etc., to the mouth of a blast furnace.
02 n. To throw out, or exhale, as from a furnace; also, to put into a furnace.
  1. 1.
    To throw out, or exhale, as from a furnace; also, to put into a furnace.[Obs. or R.]
    “He furnaces The thick sighs from him.” — Shak.