Car

Car \kahr\ , noun;
1. An automobile
2. A vehicle running on rails, as a streetcar or railroad car
3. The part of an elevator, balloon, modern airship, etc. that carries the passengers, freight, etc.
4. British: Any wheeled vehicle, as a farm cart or wagon
5. Literary: A chariot, as war or triumph
6. Archaic: Cart; carriage

Car dates to the 1300's as "wheeled vehicle" from Old Northern French carre, which derives from Latin carrum. The Latin was a borrowing from Gaulish karros, which derived from Proto-Indo-European *krsos, based on *kers- ("to run"). So it went from Proto-Indo-European (PIE) to Germanic to Romance and back to Germanic. Gotta love the wheels of language!

Need a refresher on PIE? Check out my post on eke.