The term 'KNIGHT CAP' is a combination of two words, 'KNIGHT' and 'CAP'. The word 'KNIGHT' refers to a mounted warrior in the service of a lord or king in the Middle Ages, while the word 'CAP' is a type of headgear. The crossword solutions for this term are 'HELMET' (6 letters) and 'heet' (4 letters). A HELMET is a form of protective headgear typically worn by soldiers, knights, and other warriors, while a heet is a type of CAP that is usually made of cloth or felt and has a brim that can be turned up or down.