A piece of armour (esp. metal plate armour) that protects the chest. Cf. plate, n. 9a. Now chiefly historical.

The part of a garment, piece of armour, etc., which covers the chest.

? A waistcoat or pectoral of mail. Obsolete. rare.

? A front guard.

A steel breastplate worn beneath a hauberk. Now historical.

A piece of plate armour (used in the 15th and 16th centuries) which was bolted to the breastplate and worn esp. in jousting tournaments as extra…

A breastplate, corslet. rare.

(a) a piece of armour or other protective equipment for the chest; (b) a parapet (rare).

An item of clothing, piece of armour, etc., covering the chest of a person or animal. Obsolete. rare.

A piece of armour for the chest; = breastplate, n. 1a. Obsolete. rare.

A mount on the breastplate to which the guard-chains for the helm, sword, etc., were attached.