from The American Heritage® Dictionary of the English Language, 5th Edition.

  • noun An area, as in a building or on a ship, that houses one or more steam boilers or hot-water tanks.
  • noun Informal A room equipped with telephones for making cold calls usually involving high-pressure or fraudulent sales pitches.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

  • noun A room in a building that houses the boiler(s) and similar equipment.
  • noun A compartment on a steamship that houses the boiler.
  • noun informal A room full of telemarketers making cold calls.


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