What is "solebar"

alt. (context rail transport UK Australia English) One of the longitudinal beams running along either side of a railway vehicle, onto which the bodywork is mounted, in passenger-carrying vehicles usually forming the side or the base of the floor. n. (context rail transport UK Australia English) One of the longitudinal beams running along either side of a railway vehicle, onto which the bodywork is mounted, in passenger-carrying vehicles usually forming the side or the base of the floor.