Akademik

tubbing

\\ˈtəbiŋ, -bēŋ\ noun (-s)

Etymology: tub (I) + -ing

1. : the making of tubs; also : materials for making tubs : tub stock

2. : a lining of timber or metal for a shaft (as in a mine); especially : a watertight shaft lining consisting of a series of cast-iron cylinders bolted together and used to sink through water-bearing strata

Useful english dictionary. 2012.