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ménage à trois definition

mé·nage à trois (mā nȧz̸h ȧ trwä′)

  1. an arrangement by which a married couple and the lover of one of them live together
  2. any ongoing sexual relationship involving three people, esp. when they live together

Etymology: Fr, household of three

Webster's New World College Dictionary Copyright © 2005 by Wiley Publishing, Inc., Cleveland, Ohio.
Used by arrangement with John Wiley & Sons, Inc.

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