/ Dictionary / Index R rack car: Meaning and Definition of Find definitions for: rack' car" Pronunciation: [key] — Railroads. Railroads. a flatcar containing a frame or frames for carrying various objects, as automobiles, logs, girders, etc. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. rackboard racket Related Content Daily Word Quiz: careening Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language