/ Dictionary / Index S stop order: Meaning and Definition of Find definitions for: stop' or"der Pronunciation: [key] an order from a customer to a broker to sell a security if the market price drops below a designated level. Also calledCf. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. stop-off stop-out 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