Adit
The Cyclopedic Law Dictionary · Walter A. Shumaker and George Foster Longsdorf; ed. James C. Cahill · 1922
The Cyclopedic Law Dictionary
Approach or access. As used in mining law, a horizontal opening by which a mine is entered, or by which water and ores are carried away. Also called "drift." ADITUS (Lat. adire). An approach; a way; a public way.
Co. Litt. 56a.