chivalry
noun
[ ˈʃɪv(ə)lri ]
• the medieval knightly system with its religious, moral, and social code.
• "the age of chivalry"
• knights, noblemen, and horsemen collectively.
• "I fought against the cream of French chivalry"
Origin:
Middle English: from Old French chevalerie, from medieval Latin caballerius, for late Latin caballarius ‘horseman’ (see chevalier).