1) In coal-mining this was a nearly horizontal drift or gallery which might give access to the coal or help to drain a mine.
1633 shall drive every sough which he shall take in hand till the level first begun shall withal be spent, Northowram: 1697 Jo. Smith for takeing up Levell in the Long Endhead, Farnley
1761 5 days taking up level from the throw up, Tong. It was employed in some compound terms: 1718 Levell Board 35 yds from the pitt eye
Gotten in the Thirle by the Levell gate, Farnley.