noun.
A cavalrysoldier equipped with a cuirass (armor).
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
noun.
a cavalryman equipped with a cuirass
Word Usage
"A cuirassier is a cavalryman whose body is protected by a cuirass, a piece of defensive armor, covering the body from neck to girdle, and combining a breastplate and a back piece."