from The American Heritage® Dictionary of the English Language, 4th Edition
- A trademark used for a civilian motor vehicle.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- proper n. A brand of vehicle suitable for rough terrain.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. a car suitable for traveling over rough terrain
From GP, standing for "general purpose". (Wiktionary)