ˈ ̷ ̷ˌ ̷ ̷ noun
Etymology: Middle English brestplate, from brest breast + plate
1.
a. : a metal plate protecting the breast as defensive armor — see armor illustration
b. : shield , defense
2. : a vestment worn in ancient times by a Jewish high priest, made of a double piece of rich woven fabric, embroidered, and set with 12 gems bearing the names of the tribes of Israel — see ephod illustration
3. : breastsummer
4. : a piece against which the workman presses his breast in operating a breast drill or similar tool
5. : breast strap 2
6. : a small ornamental metal plate to hold a soldier's shoulder belts at their point of crossing on the breast
7. : a hard or bony covering of the breast of an animal (as the plastron of a turtle)
8. : a metal plate for inscriptions on a casket