Also see definition of "Anus" in Bible Study Dictionaries
Word Study
Anus (root: anus)
CIDE DICTIONARY
Anus, n. [L., prob. for asnus: cf. Gr. to sit, Skr. ās.].
The posterior opening of the alimentary canal, through which the excrements are expelled. [1913 Webster]
OXFORD DICTIONARY
Anus, n. Anat. the excretory opening at the end of the alimentary canal.
Etymology
L
THESAURUS
Anus
abdomen, appendix, 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, worksAlso see definition of "Anus" in Bible Study Dictionaries
For further exploring for "Anus" in Webster Dictionary Online