<p><strong>Noun</strong></p><ul><li>Railroads: a completely enclosed freight car.</li><li>Boxcars: a pair of sixes on the first throw of the dice in the game of craps.</li></ul><p><strong>Adjective</strong></p><ul><li>Informal: extremely or disproportionately large; e.g., "The business had boxcar profits during its first year."</li></ul><p><strong>End of Response</strong></p>