English edit

Etymology edit

crow +‎ stone?

Noun edit

crowstone (countable and uncountable, plural crowstones)

  1. (UK, dialect) Ganister, a kind of sandstone.
    • 1866, Memoirs, page 67:
      Yoredale Sandstones [] Large quarries in the "crowstone," as the rock is locally calld, may also be seen in Ratcliffe Wood. [] along Hollin Lane, where the crowstone is again largely quarried.