plaquet means synonym of placard, a metal plate reinforcing the lower part of an armor breastplate or backplate. Lexicurio rates it Sui generis — a strength score of 88 out of 100.
Etymology
By surface analysis, plaque + -et.
noun
- Synonym of placard, a metal plate reinforcing the lower part of an armor breastplate or backplate.“To the back-piece of the cuirass for the protection of the loins, was hooked on a piece of armour, called Garde des Reins, or culettes; and the breast-piece was occasionally strengthened by an additional plate called a Plaquet.”