Anus

Noun

 * 1)  The entry to the rectum.
 * 2)  The external opening at the end of the rectum.
 * 3)  The opening of the alimentary canal through which stool passes during defecation.

Synonyms

 * arsehole; asshole;

Related terms
anal; anally

Etymology
First attested in 1658, from anus:, from. See also anal:, annular:, annelid:.

Thesaurus
asshole; blind gut; bowels; brain; bung; bunghole; cecum; colon; duodenum; endocardium; entrails; foregut; giblets; gizzard; guts; heart; hindgut; innards; inner mechanism; insides; internals; intestine; inwards; jejunum; kidney; kishkes; large intestine; liver; liver and lights; lung; midgut; perineum; pump; pylorus; rectum; small intestine; spleen; stomach; ticker; tripes; vermiform appendix; viscera; vitals; works; cloaca; rectum; abdomen; appendix