head·piece /-ˌpis/
  盔;帽子;雙耳式耳機;頭
  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.
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  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