Meaning of notchback

notch•back

Pronunciation: (noch'bak"), [key]
— n.
  1. a style of back for an automobile in which there is a sharp vertical drop-off from the roof line to the trunk.
  2. an automobile having such a back. Cf.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.