/ Dictionary / Index S speedster: Meaning and Definition of Find definitions for: speed•ster Pronunciation: (spēd'stur), [key] — n. a person who travels at high speed. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. speed skating speed trap Related Content Daily Word Quiz: languid Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language