menage a trois

(French 法) household consisting of a husband, a wife and the lover of one of them 三角家庭（夫妇与其一之情人三人同居）.

membranous, memento, memo, memoir, memorable, memorably, memorandum, memorandum(memo), memorial, Memorial Day, memorise, memorize, memorize, memorise, memory, memory-chip, memsahib, men, menace, menacing, menage, menagerie, mend, mendacious, mendaciously, mendacity, Mendelian, mender, mendicant, mending, menfolk, menial, meningitis, meniscus, menopausal, menopause, menses, menstrual, menstruate, menstruation, mensuration,