lustering

Century Dictionary and Cyclopedia

1. n. The process of making lustrous or glossy.
2. n. In metal-working, same as brightening, 1.
3. n. A process for giving to woolen cloth a permanent gloss and smooth surface which will not roughen with wear. This is accomplished by stretching the cloth tightly on a perforated copper cylinder, which is then placed in a steam-chest and the steam turned on.
4. n. A treatment of furs to render them smooth.
5. n. A polishing material, as the black polish used for stoves.

Wiktionary

1. v. present participle of luster.

GNU Webster's 1913

1. n. The act or process of imparting a luster, as to pottery.
2. n. The brightening of a metal in the crucible when it becomes pure, as in certain refining processes.