verb
The rock was soon ground to a fine powder
He is grinding the edge to be razor sharp
He grinds his teeth when he's angry
George has been grinding away at the same job all his life. Languages came easily, but he had to grind away at the sciences
Dictators first grind down all opposition, then destroy it
For 20 years he has been grinding out the daily gossip column
noun
Working at the checkout counter hour after hour is a terrible grind
US