car 
(kär)
(kär)n.
1. An automobile.
2. A vehicle, such as a streetcar, that runs on rails: a railroad car.
3. A boxlike enclosure for people or cargo on a conveyance: an elevator car.
4. The part of a balloon or airship that carries people or cargo.
5. Archaic A chariot, carriage, or cart.
[Middle English carre, cart, from Old North French, from Latin carra, pl. of carrus, carrum, a Gallic type of wagon; see kers- in the Appendix of Indo-European roots.]