boulderstone

English

Etymology

From boulder +‎ stone.

Noun

boulderstone (plural boulderstones)

1. A rounded stone that is larger than a pebble; a cobblestone.
2. A boulder.
   • 1844, Johann Georg Kohl, Ireland:

     Against the huge boulderstones which lay scattered about on the shore, the mighty waves broke incessantly in the maddest and most diversified manner.