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Definition of 'milling'

noun

Corrugated edge of a coin

From: GCIDE

Mill \Mill\ (m[i^]l), v. t. [imp. & p. p. Milled (m[i^]ld); p. pr. & vb. n. Milling.] [See Mill, n., and cf. Muller.] [1913 Webster]
1. To reduce to fine particles, or to small pieces, in a mill; to grind; to comminute. [1913 Webster]
2. To shape, finish, or transform by passing through a machine; specifically, to shape or dress, as metal, by means of a rotary cutter. [1913 Webster]
3. To make a raised border around the edges of, or to cut fine grooves or indentations across the edges of, as of a coin, or a screw head; also, to stamp in a coining press; to coin. [1913 Webster]
4. To pass through a fulling mill; to full, as cloth. [1913 Webster]
5. To beat with the fists. [Cant] --Thackeray. [1913 Webster]
6. To roll into bars, as steel. [1913 Webster]
To mill chocolate, to make it frothy, as by churning. [1913 Webster]

From: GCIDE

Milling \Mill"ing\, n. The act or employment of grinding or passing through a mill; the process of fulling; the process of making a raised or intented edge upon coin, etc.; the process of dressing surfaces of various shapes with rotary cutters. See Mill. [1913 Webster]
High milling, milling in which grain is reduced to flour by a succession of crackings, or of slight and partial crushings, alternately with sifting and sorting the product.
Low milling, milling in which the reduction is effected in a single crushing or grinding.
Milling cutter, a fluted, sharp-edged rotary cutter for dressing surfaces, as of metal, of various shapes.
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; a milling cutter. [1913 Webster]