Source : Webster's Revised Unabridged Dictionary (1913)

Chivalrous \Chiv"al*rous\, a. [OF. chevalerus, chevalereus, fr.
   chevalier. See {Chivalry}.]
   Pertaining to chivalry or knight-errantry; warlike; heroic;
   gallant; high-spirited; high-minded; magnanimous.

         In brave pursuit of chivalrous emprise.  --Spenser.

Source : WordNet®

chivalrous
     adj : having the qualities of gallantry attributed to an ideal
           knight [syn: {gallant}, {knightly}]