/ Dictionary / Index S speed indicator: Meaning and Definition of Find definitions for: speed' in"dicator Pronunciation: [key] an instrument for counting the number of revolutions of a gasoline engine. Also called Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. speed gear speeding Related Content Daily Word Quiz: nefarious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language