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1 definition by Zackster

to rotate the hips in an erotic manner, in such a way that the girl's ass is grinding against the guy's crotch through erection, and sometimes even orgasm.
At the nightclub I was grinding with all the mega-hotties, so much and so intense that by the end of the night, my Dick was sore.
by Zackster November 21, 2007
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