armored car

from The American Heritage® Dictionary of the English Language, 5th Edition.

• noun A lightly armored truck used to transport cash and other valuables.
• noun A lightly armored vehicle, usually mounted with a turret, used for military reconnaissance, combat support, and security.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun Alternative spelling of armoured car.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• noun an armor-plated truck with strong doors and locks used to transport money or valuables
• noun a military combat vehicle on wheels with light armor (and usually a machine gun)