2 noun
1 [singular] something that is hard work and physically or mentally tiring:
I find the journey to work a real grind.
workers emerging from their daily grind in the factory
2 [countable] American English informalSE a student who never does anything except study [= swot British English]
3 [countable] a movement in skateboarding or rollerblading, which involves moving sideways along the edge of something, so that the bar connecting the wheels of the skateboard or rollerblade presses hard against the edge

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