/ Dictionary / Index M milling: Meaning and Definition of Find definitions for: mill•ing Pronunciation: (mil'ing), [key] — n. an act or instance of subjecting something to the operation of a mill. an act or process of producing plane or shaped surfaces with a milling machine. an act or process of making a raised edge on a coin or the like. an act or process of making narrow, radial grooves on such a raised edge. a number of grooves so made. a beating or thrashing. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: milling (Thesaurus) millinery milling machine Related Content Daily Word Quiz: cautious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language