A body shape which differs from a fast back. When a fastback is observed from the side, there is a smooth line (curve) along the roof from the A-pillar to the back of the car. In a notchback, the roof is abruptly dropped down to the leading part of the rear deck (or trunk ).
NOTCHBACK
Meaning of NOTCHBACK in English
English dictionary of automotive terms. Английский словарь автомобильных терминов. 2012