moving your butt back and forth with a weener between your cheaks
by ben thomas February 02, 2003
When you tell someone you were just "grinding" with a chick, but really she was giving you a handjob by the pool.
Beef and Lara were "grinding."
by The Geej March 28, 2005
"grinding" is drug-world lingo for an informant going onto the street to identify drug dealers, who are then busted - and robbed - by the police.
Mosby provided information about which "hitters" were carrying drugs; King and Murray would "catch and release" the dealers, stripping them of their money and drugs. Then, according to prosecutors and trial testimony, the officers would illegally sell the drugs to Mosby at a discount. He in turn, he said, resold the drugs back out on the streets.

They called it "grinding," Mosby told the jury.

the officers "grinded" before or after their regular shifts, calling it their real work.
by sassafrass June 29, 2006
A dance where 12 year old boys on vine dry-hump the floor because they cant get real girls.
"I walked in on Cameron grinding in his room after Kim rejected him"
by MakkHi September 24, 2015
1. dancing where a girl moves her bottom over the boys genitals
2. a gaming term referring to an activity that must be done over and over to get an item
3. doing school work for hours to get it done, when not inspired
1. "That stripper is grinding all over him."
2. "I had to grind for hours to get past that level of Bubble Witch Saga 2."
3. "Ug, I have no motivation to get this school work done. It's due tomorrow."
"Chug a frappuccino and grind for a few hours."
by coolteacher78 July 05, 2015

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