\Gui"don\, n. [F. guidon, It. guidone. See {Guide}, v.
t.]
1. A small flag or streamer, as that carried by cavalry,
   which is broad at one end and nearly pointed at the other,
   or that used to direct the movements of a body of
   infantry, or to make signals at sea; also, the flag of a
   guild or fraternity. In the United States service, each
   company of cavalry has a guidon.
         The pendants and guidons were carried by the officer
         of the army.                          --Evelyn.
2. One who carries a flag. --Johnson.
3. One of a community established at Rome, by Charlemagne, to
   guide pilgrims to the Holy Land.