Gaming: To battle monotonously in order to gain exp. very quickly.
Dance: To gyrate the hips erotically.
Gamer 1: Damnit, I hate those bastards...
Gamer 2: Grinding?
Gamer 1: ...yeah.
He was watching her grinding.
Cody: "Naw man, im still on tha grind right now, ill holla atcha in a minute"
Simmillarlly: when a drug dealer goes out to the neighborhood to sell/buy drugs or to put another dealer or an debtfull client to death.
OR, it's the kind of dance you wouldnt like to see your daughter doing with anyone.
2. A drug deal.
3. Intense video game training.
2.Ex: There was a grind going down behind the supermarket; I hope no one got shot.
3.Ex: Nerd1: Man, I got a level 50 squirtle and I haven't even fought the first gym leader yet!
Nerd2: WOW, grind much?