/ Dictionary / Index M milling machine: Meaning and Definition of Find definitions for: mill'ing machine" Pronunciation: [key] a machine tool for rotating a cutterto produce plane or formed surfaces on a workpiece, usually by moving the work past the cutter. Also called Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. milling Millington 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