noun
anus
AY-nuhs
noun
1
The opening at the end of the digestive tract through which solid waste leaves the body.
"The vet checked the dog's anus for signs of irritation."
2
(vulgar slang) An obnoxious or unpleasant person.
"He acted like a total anus at the meeting."
How to Use Anus
Learner’s notesIn plain EnglishThe clinical/anatomical term for the body's rear opening.
When to use it
Neutral and clinical in medical contexts; the insult sense is crude slang best avoided in polite writing.
Word Forms
anuses plural, ani plural
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Etymology
From Latin anus, meaning "ring," describing the shape of the opening — related to words like "annular" and "anal."