The term 'KNIGHT's metallic suit' refers to the ARMOR worn by knights in medieval times. ARMOR was made of metal and was designed to protect the KNIGHT from weapons such as swords, spears, and arrows. It was usually composed of several pieces, including a helmet, breastplate, gauntlets, and greaves. The ARMOR was often decorated with symbols and designs to signify the KNIGHT's rank and status. The term 'ARMOR' is an accurate five-letter description for KNIGHT's metallic suit.