notum

notum is some times used as slang for part of the asshole. not sure why but used quite commonly in england
hey bob, how's your notum feeling today? a bit bloody?
by joseph555 October 21, 2007
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notum

Its not so much part of the asshole as it is the name for the 'hole' cavity itself.
That guys notum is ripped!
by davey bowe October 21, 2007
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