Railway coach (7)
(Other definitions for carriage that I've seen before include "Section of a train" , "Old form of transport, or body posture while walking" , "Coach - bearing" , "Comportment" , "Horse-drawn passenger vehicle" .)
(Other definitions for sleeper that I've seen before include "Supporting block on railway track" , "Spy; part of railway" , "Support for railway lines" , "Possibly ring" , "Train with berths" .)
(Other definitions for pullman that I've seen before include "Philip --, novelist" , "luxury car" , "Luxury railway carriage" , "Luxurious style of railway carriage" .)