from The American Heritage® Dictionary of the English Language, 4th Edition

  • n. See power plant.
  • n. One that possesses great force or energy: She is an editorial powerhouse.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. Any source of power, energy or strength.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • n. a team considered to be the best of its class
  • n. a highly energetic and indefatigable person
  • n. an electrical generating station


From power + house. (Wiktionary)



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