Carnal copulation in a manner against nature; buggery.
Historical origin: Derived from the name of a Middle Eastern town, Sodom. Legal usage: One of a list of sexual activities other than penile-vaginal intercourse that is criminalized within a political jurisdiction. Religious conservatives: Some use the term as a synonym for anal intercourse.
A broad legal term which refers to supposedly unnatural acts such as anal intercourse, bestiality, or oral sex, varies according to location.