In mining law. An underground passage driven horizontally along the courseof a mineralized vein or approximately so. Distinguished from “shaft,” which is anopening made at the surface and extending downward into the earth vertically, ornearly so, upon the vein or intended to reach it; and from “tunnel,” which Is a lateral orhorizontal passage underground intended to reach the vein or mineral deposit, wheredrifting may begin. .Tur- genson v. Diller, 114 Cal. 491, 46 Pac. 610, 55 Am. St. Rep.83. In old English law. A driving, especially of cattle.