Intended for or restricted to adults; spec. (of books, films, etc.) unsuitable for or prohibited to children because of violent or sexually…

Directly describing or representing sexual activity.

Sensational in a sexual way; (of a book, film, etc.) intended to provoke public interest through content of an overtly sexual nature.

Originally North American. Suitable only for adults; used euphemistically to refer to a sexually explicit film, book, or the like; (in extended use)…