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It is a persian slang; kos means pussy and namour means something that has been damped in a humid area. Together kos namour means stinky pussy.
Amin: Did you bang that bitch you were flirting that other night in Roxy?
Nima: Yea bro but I wish I didnt. She had a nasty kos namour.
by am170 October 10, 2011
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