in Latin, 'anus' means 'old woman'

Anal sex, sexual activity involving the anus.

a genus of Silurid Catfish;

In anatomy, the Anus is a the bodily orifice between the buttocks.

the American Nihilist Underground Society, a nihilistic organization;

the Austrian National Union of Students;

Anus language, a tribal language spoken in the Irian Jaya province of Indonesia;

the plural of Anu, a Vedic tribe;

The Anal Stage of Child Psychosexual development, according to the theories of Sigmund Freud.