windbore
nounEtymology From wind + bore.
1
The lower, or bottom, pipe in a lift of pumps in a mine.
- A large stone, 18 inches thick, is bedded at the bottom of the shaft, for the windbore of the bucket pump to rest upon. The remainder of the shaft bottom is filled in with hard burnt bricks and Barrow lime, forming a level bottom […]1864, Newton's London Journal of Arts and Sciences, volume 20, page 101: