Three people, usually involves an ongoing emotional relationship.
A sexual relationship or encounter between three people. Also known as a threesome.
Not to be confused with the term triolism. A ménage a trois is characterized by lasting quality, resembling living as a couple. Three people living together, in the same home, sharing in their daily lives and sleeping in the same bed.
From the French, this means three people set up a household. It includes sexual relations of course. So it really refers to a live-in situation, but it has been generalized quite a bit. On the site, it can often mean any "encounter" in which three people have sex.
household for three; an arrangement where a married couple and a lover of one of them live together while sharing sexual relations
sexual encounters involving three people
When three people have sex together at once. A threesome.
Sexual contact among three people at the same time. Also known as a threesome. Translated in French as "household of three."
Three people having sex together.