/ 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: abscond Analogy of the Day: Today?s Analogy Spelling Bee: Today?s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language