[ fast-bak, fahst- ]

  1. a form of back for an automobile body consisting of a single, unbroken convex curve from the top to the rear bumper.

  2. a car having such a back.

Origin of fastback

An Americanism dating back to 1960–65; fast1 + back1

Words Nearby fastback Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

How to use fastback in a sentence

  • Press another button to raise the large rear spoiler—effectively saying “back off” to anyone clueless enough to tailgate such a ferocious fastback.

    Adventure cruisers | Joe Phillips | July 15, 2021 | Washington Blade

British Dictionary definitions for fastback


/ (ˈfɑːstˌbæk) /

  1. a car having a back that forms one continuous slope from roof to rear

  2. British a type of pig developed from the landrace or large white and bred for lean meat

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012