Source : Webster's Revised Unabridged Dictionary (1913)

Headpiece \Head"piece`\, n.
   1. Head.

            In his headpiece he felt a sore pain. --Spenser.

   2. A cap of defense; especially, an open one, as
      distinguished from the closed helmet of the Middle Ages.

   3. Understanding; mental faculty.

            Eumenes had the best headpiece of all Alexander's
            captains.                             --Prideaux.

   4. An engraved ornament at the head of a chapter, or of a
      page.

Source : WordNet®

headpiece
     n 1: the band that is the part of a bridle that fits around a
          horse's head [syn: {headstall}]
     2: a protective helmet for the head