baldacchin

noun3

1. •
   A canopy suspended over an altar or throne, originally made of this fabric; a ciborium.

   • Bernini had already provided the chief coup de théâtre of the basilica's interior, the monumental bronze canopy or baldachino over the high altar and tomb of St Peter. — 2009
2. •
   A building in the form of a canopy, or a crown supported by pillars for the covering of an altar; a canopy carried over the host in Roman Catholic countries.

   • BALDACHIN is a Building in form of a Canopy, or Crown supported by Pillars, often serving for the Covering of an Altar; Also a Canopy carried over the Host in Popish Countries. — 1721
3. •
   (no longer used) A rich, embroidered brocade used for clothing in the Middle Ages, the web being gold and the woof silk.