Webster’s Revised Unabridged Dictionary · 1913
Mill
Mill, v. i. 1. To undergo hulling, as maize.
2. To move in a circle, as cattle upon a plain.
The deer and the pig and the nilghar were milling round and round in a circle of eight or ten miles radius. Kipling.
3. To swim suddenly in a new direction; — said of whales.
4. To take part in a mill; to box. [Cant]
Mill, n. 1. Short for Treadmill.
2. The raised or ridged edge or surface made in milling anything, as a coin or screw.
Mill, v. t. 1. (Mining) To fill (a winze or interior incline) with broken ore, to be drawn out at the bottom.
2. To cause to mill, or circle round, as cattle.