Definitions from Wiktionary (room and pillar)
▸ noun: (mining) A variant of breast stoping in which the mined material is extracted across a horizontal plane, creating horizontal arrays of rooms and pillars.
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▸ noun: (mining) A variant of breast stoping in which the mined material is extracted across a horizontal plane, creating horizontal arrays of rooms and pillars.
Similar:
mining method,
underground mining,
Coal mining,
cave,
lot,
POST,
capital,
column,
Herm,
impost,
more...
Phrases:
▸ Words similar to room and pillar
▸ Usage examples for room and pillar
▸ Idioms related to room and pillar
▸ Wikipedia articles (New!)
▸ Words that often appear near room and pillar
▸ Rhymes of room and pillar
▸ Invented words related to room and pillar