#furnace  an enclosed chamber in which heat is produced to heat buildings, destroy refuse, smelt or refine ores, etc.
  supertype:  chamber  a natural or artificial enclosed space
  subtype:  blast_furnace  cremation_chamber  cupola.furnace  electric_furnace  firebox  forge  gas_furnace  incinerator  oil_burner  tank_furnace
  part:  grate.framework__grating  a frame of iron bars to hold a fire
  part:  register.regulator  a regulator (as a sliding plate) for regulating the flow of air into a furnace or other heating device

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