cuirassier

from WordNet (r) 3.0 (2006)

cuirassier
    n 1: a cavalryman equipped with a cuirass

from The Collaborative International Dictionary of English v.0.48

Cuirassier \Cui`ras*sier"\ (kw?`r?s-s?r"), n. [F. cuirassier.
   See {Curass}.] (Mil.)
   A soldier armed with a cuirass; especially, a soldier of the
   heaviest cavalry, wearing a cuirass only when in full dress.
   --Milton.
   [1913 Webster Webster 1913 Suppl.]