Definition of town car:
(n) :
(automotive, informal) A hired non-stretch limousine, traditionally but not necessarily a standard-wheelbase Lincoln Town Car or Cadillac sedan.
(n) :
(automotive, nonstandard) Synonym of city car.
(n) :
(automotive) A car having a kind of bodystyle produced from 1908 to 1939 with an external or open-topped driver's position and an enclosed compartment for passengers.