/ Dictionary / Index S stop number: Meaning and Definition of Find definitions for: stop' num"ber Pronunciation: [key] f-number. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. stop motion stop-off Related Content Daily Word Quiz: ounterfeit Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language