1. a piece of armor that covers and protects the chest
Usage: historical
2. a decorative piece of metal or cloth worn on the chest, especially as part of a uniform or ceremonial dress

Examples

• The knight’s breastplate gleamed in the sunlight.
• Medieval armor included a helmet, breastplate, and leg guards.
• The ceremonial breastplate was adorned with the regiment’s insignia.
• Ancient warriors wore bronze breastplates for protection in battle.
• The museum displayed a Roman soldier’s breastplate from the first century.
• The high priest’s breastplate was decorated with twelve precious stones.