longwall

[lawng-wawl, long-]

long·wall

[lawng-wawl, long-]
adjective Mining.
1.
noting or pertaining to a means of extracting coal or other minerals in an underground mine from a continuous face, the roof before the face being supported at intervals by temporary or movable artificial supports. Compare room-and-pillar.
noun
2.
the continuous face so worked.

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Longwall is always a great word to know.
So is ort. Does it mean:
a scrap or morsel of food left at a meal.
a chattering or flighty, light-headed person.

Origin:
1830–40; long1 + wall
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2012.
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