Two-door car (5)
I believe the answer is:
coupe
'two-door car' is the definition.
(I've seen this before)
This is the entire clue.
(Other definitions for coupe that I've seen before include "Car with just two doors and two front seats" , "Car; dessert glass" , "Car with two front seats and a luggage compartment" , "Two-door car" , "Type of car; dish" .)