A knight is a member of the warrior class in the Middle Ages in Europe. Knight has a code of law called "Chivalry". In other Indo-European language, is also commonly referred to as a knight cavalier or rider. Knight is a position of honor and prestige as other equestrian knight types (eg hippeus in Greece and in the Roman Eques).

The work of Sir Thomas Malory Le Morte d'Arthur ("The Death Arthur"), written in 1485, played a major role in defining the cavalry ideals that are important to the formation of the concept of knight as an elite warrior sworn to keep the values o o of faith, loyalty, courage, and honor.