drawbar

plural drawbars

1. rail transportAn open-mouthed bar at the end of a car, which receives a coupling link and pin by which the car is drawn. It is usually provided with a spring to give elasticity to the connection between the cars of a train.
2. rail transportA bar of iron with an eye at each end, or a heavy link, for coupling a locomotive to a tender or car.

   With multiple-unit electric trains one cannot quote figures of drawbar horsepower, because there is no drawbar, as such; […].

   1960 April 28, O. S. Nock, “British Locomotive Practice and Performance”, in Railway Magazine, page 263

3. roadA device to couple a powered road vehicle to a load to transfer tractive effort to the load, either as a push or as a pull.
4. entertainmentA sliding bar on a Hammond organ, controlling the volume of a waveform.
5. engineeringA device for changing the tools on milling machines.