car

ot noun

1. A wheeled vehicle that moves independently, with at least three wheels, powered mechanically, steered by a driver and mostly for personal transportation. She drove her car to the mall.
2. An unpowered unit in a railroad train. The conductor coupled the cars to the locomotive.
3. An individual vehicle, powered or unpowered, in a multiple unit. The 11:10 to London was operated by a 4-car diesel multiple unit.
4. A passenger-carrying unit in a subway or elevated train, whether powered or not. From the frontmost car of the subway, he filmed the progress through the tunnel.