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the opening at the lower end of the alimentary canal, through which the solid refuse of digestion is excreted.
a suffix occurring in scientific words of Latin origin:
Platanus.
a twining herb, Tropaeolum tuberosum, of the nasturtium family, found in the Andes, having edible tubers and large flowers with yellow petals and red spurs.
the tuber of this plant.
the Akkadian god of heaven.
Historical Examples

anus hercle huic indicium fecit de auro, perspicue palam est.
Amphitryo, Asinaria, Aulularia, Bacchides, Captivi Plautus Titus Maccius

anus orange-coloured, and furnished with a bristle for oviposition.
Illustrations of Exotic Entomology, Volume 2 Dru Drury

Sixty hundred of the mounted anus and Druhyus perished; sixty and six heroes fell before the righteous Sudas.
The History of Antiquity, Volume IV (of 6) Max Duncker

Without delay, Indra destroyed all the fortresses of the enemy, and divided the goods of the anus in battle to the Tritsus.
The History of Antiquity, Volume IV (of 6) Max Duncker

anus in posterior interradius, on oral surface, closed by valvular pyramid.
Encyclopaedia Britannica, 11th Edition, Volume 8, Slice 10 Various

anus usually in the upper or oral half of the theca, and never aboral.
Encyclopaedia Britannica, 11th Edition, Volume 8, Slice 10 Various

anus terminating in a mucro, and sometimes in a filiform jointed tail without a sting at the end.
An Introduction to Entomology: Vol. IV (of 4) William Kirby

anus posterior, median; anterior tentacles, atrophied; foot broad.
Encyclopaedia Britannica, 11th Edition, Volume 11, Slice 5 Various

anus nearly always terminal, rarely dorsal, at a little distance from end of body.
Encyclopaedia Britannica, 11th Edition, Volume 5, Slice 7 Various

noun
the excretory opening at the end of the alimentary canal related adjective anal
noun
(Babylonian myth) the sky god
abbreviation
Australian National University
n.

“inferior opening of the alimentary canal,” 1650s, from Old French anus, from Latin anus “ring, anus,” from PIE root *ano- “ring.” So called for its shape; cf. Greek daktylios “anus,” literally “ring (for the finger),” from daktylos “finger.”

anus a·nus (ā’nəs)
n. pl. a·nus·es
The opening at the lower end of the alimentary canal through which solid waste is eliminated from the body. Also called anal orifice, fundament.
anus
(ā’nəs)
The opening at the lower end of the digestive tract through which solid waste is excreted.

anal adjective
anus [(ay-nuhs)]

The opening through which feces pass out of the body.