Definition of boulderstone in English:

boulderstone

noun

  • A large rock, typically one that has been worn smooth by erosion.

    • ‘The hole was covered by a large boulderstone.’
    • ‘They broke the door through with a boulderstone.’
    • ‘Large boulderstones are scattered over the beach, and sometimes form shoals as far as five miles from shore.’
    • ‘Near the place where we sat down there were some large boulderstones, from which hung pointed icicles.’
    • ‘Against the huge boulderstones which lay scattered about on the shore, the mighty waves broke incessantly.’
    rock, stone
    View synonyms

Origin

Middle English: of Scandinavian origin.

Pronunciation

boulderstone

/ˈbəʊldəstəʊn/