milling

American Heritage® Dictionary of the English Language, Fourth Edition

1. n. The act or process of grinding, especially grinding grain into flour or meal.
2. n. The operation of cutting, shaping, finishing, or working products manufactured in a mill.
3. n. The ridges cut on the edges of coins.

Century Dictionary and Cyclopedia

1. n. The process of grinding, or subjecting materials to the action of the machinery of a grinding-mill. Specifically
2. n. The manufacture of cereals into flour or meal. The manufacture of fine flour is now carried on by two distinct methods, respectively called low milling and high willing. Low milling prevailed almost universally until a recent period; but it is now largely superseded by high milling, by which an increased product and a much purer quality of flour are obtainable, especially from wheat inferior to the higher grades. In low milling the grain is ground only once and then bolted. In high milling it is subjected to repeated grindings. The earlier grinding or grindings decorticate the grain, which, being subjected after each grinding to screening and blowing in the middlings purifier, is freed from adherent impurities, and from parts which envelop the finer nutritious portions. The latter thus cleansed are called semolina (half-ground). The semolina is then subjected to grinding, cylinder-milling, or disintegration milling, to complete its conversion into fine flour. Cylinder-milling, also called roller-milling, is the manufacture of flour by the use of cylinder-mills. Disintegration milling is the manufacture of flour or meal by the use of the disintegrator. See mill.
3. n. The operation of upsetting the edge of a coin-blank to form the milled edge; also, the operation of putting the series of small transverse ridges and furrows on the edge of an otherwise finished coin, or on a screw-head to adapt it for easy turning with the fingers. See milled screw, under screw.
4. n. A method of shaping metals in a milling-machine, by passing the metal under a serrated revolving cylinder or cutter
5. n. In metal-working, a method of ornamenting metallic surfaces by treatment in a lathe with ribbed tools, which produce ridged surfaces.
6. n. A method of softening and opening the pores of hides by placing them with some tan-liquor in a wooden drum which is caused to revolve.
7. n. The felting or fulling of a cloth to thicken it.
8. n. In pottery, the operation of grinding and mixing the slip.
9. n. A thrashing; a fight; a beating.
10. n. The act of playing around in a circle: said of a school of fish. Also called cart-wheeling.

Wiktionary

1. n. The notches around the edge of a coin, placed there during minting so that it can be told if some of the metal from the edge is removed. Removing metal from a coin was common practice during earlier times when coins made of precious metals circulated.
2. v. present participle of mill.

GNU Webster's 1913

1. 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.

WordNet 3.0

1. n. corrugated edge of a coin