noun
- a piece of armor that protects the knee
Usage: historical; archaic
Examples
- The knight’s poleyn was dented from battle.
- Medieval armor included a poleyn to protect the vulnerable knee joint.
- The museum displayed a complete suit of armor with polished poleyns.
- Armorers crafted poleyns with articulated plates for flexibility.
- The poleyn was secured with leather straps above and below the knee.