butthole

noun

butt·​hole ˈbət-ˌhōl 

plural buttholes

vulgar slang

1

: anus

2

: a stupid, annoying, or detestable person

But I did like the one where he thought the trombone was a scientific instrument. That one I liked because he was such a butthole.

—George Saunders, Harper's, April 1995

Word History

First Known Use

1951, in the meaning defined at sense 1

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