/ Dictionary / Index S speeding: Meaning and Definition of Find definitions for: speed•ing Pronunciation: (spē'ding), [key] — n. the act or practice of exceeding the speed limit: a $50 fine for speeding. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: speeding (Thesaurus) speed indicator speed light Related Content Daily Word Quiz: laudable Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language