anus|ˈānəs|
noun Ana­to­my & Zoo­lo­gy
the ope­ning at the end of the ali­men­ta­ry ca­nal th­rough which so­lid was­te mat­ter lea­ves the body.
ORI­GIN late Midd­le Eng­lish : from La­tin, ori­gi­nal­ly ‘a ring.’
(New Ox­ford Ame­ri­can Dic­tion­a­ry)

Anus [lat.] m. Gen. - Mz. Ani …