/ Dictionary / Index S speed bump: Meaning and Definition of Find definitions for: speed' bump" Pronunciation: [key] a rounded ridge built crosswise into the pavement of a road or driveway to force vehicles to slow down. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. speedboating speed chess Related Content Daily Word Quiz: procrastinate Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language