Noun: knee piece
Derived forms: knee pieces
Type of: armor plate [US], armor plating [US], armour plate [Brit, Cdn], armour plating [Brit, Cdn], plate armor [US], plate armour [Brit, Cdn]
Part of: body armor [US], body armour [Brit, Cdn], cataphract, coat of mail, suit of armor [US], suit of armour [Brit, Cdn]