To grind or otherwise process in a mill or other machine.

“to mill flour”

To shape, polish, dress or finish using a machine.

To engrave one or more grooves or a pattern around the edge of (a cylindrical object such as a coin).

(trading card games) To move (a card) from a deck to the discard pile.

(Hearthstone) To destroy (a card) due to having a full hand.

Ground by a mill.

“Coarsely milled maize is termed cornmeal, but when finely milled and sifted it is called corn flour.”