Noun
a passenger car that has berths for sleeping
Source: WordNetsleeping-car
In the heat of the Russian summer a sleeping car is the most horrible instrument of martyrdom imaginable. Manfred von Richthofen
The fare for a one-week trip from Omaha to San Francisco on an emigrant sleeping car was about $65 for an adult. Source: Internet
This translated into keeping express, telegraph, sleeping car and other lines of business for themselves, creating separate departments or companies as necessary. Source: Internet