chivalry

From Middle English chivalerie, a late 13th century loan from Old French chevalerie (“knighthood, chivalry, nobility, cavalry”) (11th century), the -erie (“-ery”) abstract of chevaler (“knight, horseman”), from Medieval Latin caballarius (“horseman, knight”), from caballus (“horse”). Medieval Latin caballaria (“knighthood, status or fief of a knight”) dates to the 12th century. Doublet of cavalry.