/ Dictionary / Index R roadster: Meaning and Definition of Find definitions for: road•ster Pronunciation: (rōd'stur), [key] — n. an early automobile having an open body, a single seat for two or three persons, and a large trunk or a rumble seat. a horse for riding or driving on the road. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: roadster (Thesaurus) roadstead road test Related Content Daily Word Quiz: spectral Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language