Definition of gruss
: a rock that is finely granulated but not decomposed by weathering
Start your free trial today and get unlimited access to America's largest dictionary, with:
- More than 250,000 words that aren't in our free dictionary
- Expanded definitions, etymologies, and usage notes
- Advanced search features
- Ad free!
Origin and Etymology of gruss
German grus, from Low German, from Middle Low German grūs, grōs; akin to Old English grēot grit
Seen and Heard
What made you want to look up gruss? Please tell us where you read or heard it (including the quote, if possible).