/ Dictionary / Index S stoper: Meaning and Definition of Find definitions for: stop•er Pronunciation: (stō'pur), [key] — n. a machine for drilling rock from below. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. stope stopgap Related Content Daily Word Quiz: paradox Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language