Collins Russian Dictionary 2nd Edition © HarperCollins Publishers 2000, 1997:
sleeper [ˈsliːpər] n (RAIL) (train) по́езд*со спа́льными ваго́нами; (:carriage) спа́льный ваго́н; (:berth) спа́льное ме́сто#; (:BRIT) (on track) шпа́ла; (person) спя́щий[-ая] m(f) adj
* is used to mark translations which have irregular inflections. The Russian-English side of the dictionary gives inflectional information.
Русский: