Grinding is the most popular form of dancing with somebody of the opposite sex. It is when a guy gets behind a girl and the girl rubs her ass all over the guys front. It can be very intimate but can also get pretty crazy on faster paced songs.
Guy 1: Dude, I got so much ass tonight!
Guy 2: Grinding is the best thing ever!
Guy 1: Good thing we were wearing compression shorts or they would've definitely felt our dicks.
Guy 2: Hell yeah, I was hard as a rock!
by mbo23js November 03, 2013
A way of dancing that can be described as a feeling like getting punched in the balls with a really nice ass over and over and over and over again
Yo, Prom last night was Bomb! Me and this chick were grinding so much that my balls started to hurt!
by john doe deer May 15, 2011
A video game term, and is the name of the process of doing completely unnecessary useless events, most commonly gaining EXP by defeating enemies in a specific area without moving on, to level up.

This often leads to being overpowered.
Sorry... I was grinding in that field over there.
by Ichimoto June 27, 2010
A repetitive task usually involved in a Massively Multiplayer Online Role playing game (MMORPG) where a character's skill's are based entirely on killing monsters to gain strengths or levels. In most MMORPGs, there is no skill from the player involved, so anyone who plays 20 hours a day of grinding will be stronger than a player who does not. MMORPGs become a game genre filled with those who are too slow to play First-Person Shooters (FPS) or too dumb to play Real Time Strategy (RTS) but want to brag and be 1337 g4m3r so they play 20 hours a day and boast to "n00bs"
me_is_n00b: Johnny, what level are you?

Grinding_Johnny210: I'm level 250+

me_is_noob: wow you are so uber 1337! You must be so good at this!

Grinding_Johnny210: Yea, it's pure skill.

me_is_noob: I wish i could grind like you, unfortunately, I have a life, a job, a car, a girlfriend..

Grinding_Johnny210: You suck n00b!
by dude112233 January 07, 2006
When someone usually a girl gyrates her hips on a guys crotch. The guy will usually grab her arm and have the other on her waist. Dirty dancing basically.
Person 1: So how was the party last night?
Person 2: hella fun we were grinding all night long in a grind line
Person 1: That's gross.
Person 2: No, it's really fun.
by grindinggirl January 23, 2011
To do your math homework
person 1: oh man, i was grinding hardcore last night.
person 2: oh yah man my teacher tells me im a good grinder.
by joethegrinder October 17, 2010
the repetitive, action of using the same technique to level up a character in a level based video game, such as Pokemon, World of Warcraft, or RuneScape
Man, I had to do some serious grinding to get my Charizard up to level 100
by Quintus5 May 05, 2011

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