Top Definition
A slight injury similar to run burn that comes from falling or being dragged hard on grass/ground outside.

usually from outdoor games such as soccer, football, and Hug-A-Bear
Dude I got some nasty grass burn from that game of Hug-A-Bear Yesterday.

Person A: Wow what happened to the skin on your arm?
Person B: It's grassburn.
by theplauge April 29, 2009

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