dining car dingdong theory • dining hall · · · Info · Definitions · Characters · · dining car · · Text Common · · Latin · · Scripts 10 · · Length Definitions · · · (noun) a passenger car where food is served in transit. Synonyms: diner, dining compartment, buffet car. · · Noun Definition 1 Characters · · space U+0020 a latin small letter a U+0061 c latin small letter c U+0063 d latin small letter d U+0064 g latin small letter g U+0067 i latin small letter i U+0069 n latin small letter n U+006E r latin small letter r U+0072