slatestone

English

Etymology

From slate +‎ stone.

Noun

slatestone (countable and uncountable, plural slatestones)

  1. slate
    • 2025 March 5, Dr Joseph Brennan, “Remembering Brunel's timber viaducts”, in RAIL, number 1030, page 58:
      It [St Pinnock Viaduct] has seven piers of roughly-dressed, coursed slatestone from Westwood quarry. [] Moorswater is another masonry replacement, consisting of seven tapering piers of rock-faced slatestone with eight semi-circular arches with granite long and short voussoirs.