Breadcrumb Home > Dictionary > Index O Cite observation car: Meaning and Definition of Find definitions for: observa'tion car" Pronunciation: [key] a railroad passenger car having a lounge or platform from which the scenery can be viewed. Random House Unabridged Dictionary, Copyright 1997, by Random House, Inc., on Infoplease. observational observation post TrendingHere are the facts and trivia that people are buzzing about. March 2021 Current Events: US News The Berlin Conference and the Partition of Africa The Implied Powers of Congress The Women's March on Versailles Keeping Your Brain Active in a COVID-19 World The Manchu Related Content Daily Word Quiz: neplusultra Analogy of the Day: Today?s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language