The Collaborative International Dictionary of English v.0.48:

Chivalry \Chiv"al*ry\, n. [F. chevalerie, fr. chevalier knight,
   OF., horseman. See Chevalier, and cf. Cavalry.]
   1. A body or order of cavaliers or knights serving on
      horseback; illustrious warriors, collectively; cavalry.
      "His Memphian chivalry." --Milton.
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            By his light
            Did all the chivalry of England move,
            To do brave acts.                     --Shak.
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   2. The dignity or system of knighthood; the spirit, usages,
      or manners of knighthood; the practice of knight-errantry.
      --Dryden.
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   3. The qualifications or character of knights, as valor,
      dexterity in arms, courtesy, etc.
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            The glory of our Troy this day doth lie
            On his fair worth and single chivalry. --Shak.
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   4. (Eng. Law) 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.
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   5. Exploit. [Obs.] --Sir P. Sidney.
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   Court of chivalry, a court formerly held before the lord
      high constable and earl marshal of England as judges,
      having cognizance of contracts and other matters relating
      to deeds of arms and war. --Blackstone.
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