Sodomy

Noun

 * 1) immorality in general
 * 2) any of various forms of sexual intercourse held to be unnatural, particularly bestiality.

Synonyms

 * (bestiality): bestiality, zoophilia
 * (anal sex): anal sex, buggery

Derived terms

 * sodomise, sodomize
 * sodomy law
 * sodomite