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Webster 1913 Edition
Tubbing
Tub′bing
,Noun.
1.
The forming of a tub; also, collectively, materials for tubs.
2.
A lining of timber or metal around the shaft of a mine; especially, a series of cast-iron cylinders bolted together, used to enable those who sink a shaft to penetrate quicksand, water, etc., with safety.
Webster 1828 Edition
Tubbing
TUB'BING
,ppr.