The act of, in a video game, performing the same mission/level/race etc over and over for an extended period of time, to rack up credits/dollars/points. This is usually done on an incredibly short or easy level, with very low input or effort required to receive a large amount of the game's monetary units.
After playing through Gran Turismo 5: Prologue, many people money grind on S-3, a >2 minute long two to three lap time trial which nets over 40,000 credits.

Dude 1: I finished up all the events in GT5:P, but I still don't have enough money for the F2007.

Dude 2: Try money grinding on S-3. It'll take a couple of hours, but it's the fastest way to earn a ton of credits.
by lambolover August 22, 2009
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