1 definition by lolololol 69

Top Definition
A notorious car in a neighborhood that cruises around crowded streets, in which the driver sells pot out of his car. Very easy to find, the "grain train" is usually a dude who will roll down his windo no more than 6 inches from the top, take fifteen bucks, slip you some weed and roll out.
You got any money, cuz the grain train is driving away.
by lolololol 69 January 05, 2006

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