GRINDS
Grinds
In skateboarding, Grinds are tricks that involve the skateboarder sliding along an object using the trucks of a skateboard rather than the wheels. Grinds can be performed on any object narrow enough to fit between wheels and are often performed on the coping of a skate ramp, a purpose-built "grind box", step, ledge or horizontally-positioned pole.The above text is a snippet from Wikipedia: Grinds (skateboarding)
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