grinding

noun ! Definition from WordNet 3.1, Princeton University. Pronunciation from Wiktionary, via Kaikki.org. More about grinding at Wordnik → Where our words come from →

1. Material resulting from the process of grinding.

   vegetable grindings clogged the drain

2. A harsh and strident sound (as of the grinding of gears).
3. The wearing down of rock particles by friction due to water or wind or ice.