Definitions Found:
empty freight car placed under the projecting end of a long object carried by the next car, so that the latter can be connected with another part of the train
- idlersempty freight car placed under the projecting end of a long object carried by the next car, so that the latter can be connected with another part of the train
- idlerempty freight car placed under the projecting end of a long object carried by the next car, so that the latter can be connected with another part of the train