anal sex

noun

Etymology: From anal + sex. First use appears c. 1970 in the American Sociological Review.

1. A sexual activity involving stimulation of a sexual partner's anus or rectum, especially by penetration with the penis or an object.

   “It is a common misconception that anal intercourse is an exclusively homosexual male practice. […] As elsewhere in Africa, little data exist on the role of anal sex in HIV acquisition in women in the general population […]”

   “They had sex before either knew the other’s surname. They had anal sex before they had vaginal sex.”