Mĭll'ing, n.

n. The act or employment of grinding or passing through a mill; the process of fulling cloth; the act or process of making a raised or indented edge upon coin, &c.

Milling-machine, a machine tool for dressing surfaces by rotary cutters. — Milling-tool, a roller with indented edge or surface, for producing like indentations in metal by rolling pressure, as in turning; a knurling tool.