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roofstone

Noun CEFR B2
ˈɹuːfˌstəʊ̯n

Definitions

  1. The stone or rock layer immediately above a coal seam.
  2. A large, usually flat stone slab placed atop the side-stones (orthostats) of a megalithic burial chamber—such as in portal tombs, wedge tombs, or gallery graves—to form a roof covering the interior space.

Examples

“The intention of the props is for the security of the workmen to keep⟳ up the roofstone; they have⟳ no effect in resisting the crush⟳ of the super-incumbent strata.”

CEFR level

B2
Upper Intermediate
This word is part of the CEFR B2 vocabulary — upper intermediate level.
See all B2 English words →

See also

Rooftop Rooftop of the World rooftopper rooftopping Rooftops Rooftree

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