from the GNU version of the Collaborative International Dictionary of English
- n. Graywacke.
from The Century Dictionary and Cyclopedia
- n. See graywacke.
Sorry, no etymologies found.
He informed me, as we went, that the Grauwacke (Lower Silurian) deposits of the district, hitherto deemed so barren, had recently yielded their organisms in a slate quarry at Gamrie-head; and that they belong to that ancient family of the Pennatularia which, in this northern kingdom, seems to have taken precedence of all the others.
Still other derivatives of Indo-European * wegh - are NORWAY ` northern way; northern region '[from Old Norse Norvegr] (the Modern Norwegian word is Norge); GRAYWACKE ` a kind of dark gray sandstone' [from German Grauwacke, from grau ` gray '+