/ Dictionary / Index C container car: Meaning and Definition of Find definitions for: contain'er car" Pronunciation: [key] a flatcar or gondola car for carrying a number of standard, separate, removable containers. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. containerboard containerization Related Content Daily Word Quiz: paradox Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language