A group of people grinding each other at a bar. This includes multiple people of different gender.
Carter is a hoe so he likes to get lit at the bar and join grindpiles. He never knows who he was grinding on.
by Quevin November 22, 2017
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Grindpilled means that you are grinding for something for hours or days on end
Fletcher has stayed up all night grinding grand theft auto heists he is a grindpilled freak.
by DrearyThrill March 7, 2021
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