/ Dictionary / Index M machine pistol: Meaning and Definition of Find definitions for: machine' pis"tol Pronunciation: [key] a fully automatic pistol; submachine gun. Also called Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. machinelike machine-readable Related Content Daily Word Quiz: ontiguous Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language