headpiecen.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.()