Dictionary

roofstone en · NOUN

Pronunciation

• /ˈɹʊf-/ (Canada, General-American)
• /ˈɾuːfˌsʈoːn/ (India)
• /ˈɹʉːfˌstɐʉ̯n/ (New-Zealand)
• /ˈɹʉfˌston/ (Scotland)
• /ˈɾʊf-/ (India)
• /ˈɹʊf-/ (Received-Pronunciation)
• ro͞of′stōn′
• /ˈɹufˌstoʊ̯n/ (Canada, General-American)
• /ˈɹʊf-/ (Australia)
• /ˈɹuːfˌstəʊ̯n/ (Received-Pronunciation)
• /ˈɹʉf-/ (Scotland)
• ro͝of-
• /ˈɹʉːfˌstəʉ̯n/ (Australia)
• /ˈɹʊf-/ (New-Zealand)

Etymology

From roof + stone.

Meanings

1. The stone or rock layer immediately above a coal seam.
   • 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. 1830, The Edinburgh Encyclopædia, volume 14, page 352:
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.

Forms

Coordinates

roof tile · orthostat