Breastplate

A breast-plate is a front portion of plate armour covering the torso, usually made of bronze, iron or linen or (though rarely) leather.A torso-covering armour (one or more pieces) could also be called a cuirass.

The high-elves used a specific kind of breast-plate they knew as an "Ambasse", though the term could also be used for a kind of byrne or hauberk.