MÉNAGE À TROIS
Meaning of MÉNAGE À TROIS in English
mé·nage à trois /ˌmeɪnɑːʒ ɑː ˈtrwɑː $ məˌnɑːʒ-/ BrE AmE noun [singular]
a sexual relationship involving three people who live together
Longman Dictionary of Contemporary English.
Longman - Словарь современного английского языка.
2012