The action or process of subjecting something to the operation of a mill. The processing or treatment of a substance or material in any kind of mill…

The operation of shaping metallic substances by means of a turning-lathe. Also concrete.

The drawing of profiles. Obsolete. rare.

Boring; perforation.

= spark erosion n. above.

a method of machining metal in which a series of electric sparks is used to remove droplets from the piece; frequently attributive.