ménage à trois: Meaning and Definition of

mé•nage à trois

Pronunciation: (mā-näzh' ä trwä' Fr. mā-nazh a trwä'), [key]
  1. a domestic arrangement in which three people having sexual relations occupy the same household.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.