retable

A structure forming the back of an altar, especially.

An overhanging shelf for lights and ornaments.

A frame enclosing painted panels.

A structure raised above an altar at the back, either independent in itself, or forming a decorative frame to a picture, a bas-relief, or the like, in which case the word includes the work of art itself.

A shelf behind the altar, for display of lights, vases of flowers, etc.

A table or shelf behind an altar, on which are placed images or holy objects