noun (plural plaquets)
- (archaic) A strong metal plate used to reinforce the lower part of the breastplate in a suit of plate armor. A placard.
- 1786: To the back-piece of the cuirass for the protection of the loins, was hooked on a piece of armour, called Garde des reins, Garde des Reins, or culettes; and the breast-piece was occasionally strengthened by an additional plate called a Plaquet. — Francis Grose, A Treatise on Ancient Armour and Weapons, page 21.
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