1) A shallow vessel, often of silver gilt and usually described as ‘covered’.
1490 Dicto Johanni Copley optimam meam peciam stantem coop. et deaur. duas alias pecias arg. et deaur. vocatas flat-peces, Batley. A list of items in the possession of the Abbot of Fountains at the Dissolution, places eight ‘standing pieces’ before four ‘flat pieces’ and a typical description is: c.1536 j flatt pece with a covering giltid, weyng xl unces. These followed several ewers and preceded a goblet.