On a European passenger train, a wagon-lit is this type of car
In the 
United States, Pullman was used to refer to railroad sleeping cars which were 
built and ... Pullman also refers to railway dining cars in Europe that were 
operated by the... [DOC] [TLE] wagon-lit - Memidex dictionary/thesaurus [PAR] "wagon-lit" definition: a passenger car that has berths for sleeping.