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.
... plotting?" asked Betty gaily, emerging warm and rosy from her vigorous tubbing. "Do you know, I've just remembered that I promised to show Libbie how to make mile-a-minute lace before breakfast? I ... — Betty Gordon in Washington • Alice B. Emerson
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