Definition of car:
a motor vehicle with four wheels; usually propelled by an internal combustion engine; "he needs a car to get to work"
a wheeled vehicle adapted to the rails of railroad; "three cars had jumped the rails"
the compartment that is suspended from an airship and that carries personnel and the cargo and the power plant
where passengers ride up and down; "the car was on the top floor"
a conveyance for passengers or freight on a cable railway; "they took a cable car to the top of the mountain"