(n.) A body or order of cavaliers or knights serving on horseback; illustrious warriors, collectively; cavalry.
(n.) The dignity or system of knighthood; the spirit, usages, or manners of knighthood; the practice of knight-errantry.
(n.) The qualifications or character of knights, as valor, dexterity in arms, courtesy, etc.
(n.) A tenure of lands by knight's service; that is, by the condition of a knight's performing service on horseback, or of performing some noble or military service to his lord.