/ Dictionary / Index M machine tool: Meaning and Definition of Find definitions for: machine' tool" Pronunciation: [key] a power-operated machine, as a lathe, used for general cutting and shaping of metal and other substances. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. machine-stitch machine vision Related Content Daily Word Quiz: rustic Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language