Retable
The term may refer to a raised shelf or ledge behind the altar. This shelf is also called a gradine. The altar cross, altar lights, and vases of flowers may be placed on it. The tabernacle may also be placed on it. The term may also refer to a frame above and behind the altar for decorated panels or to a framework for panels, paintings, or sculpture. This framework is also known as a reredos.
Glossary definitions provided courtesy of Church Publishing Incorporated, New York, NY,(All Rights reserved) from “An Episcopal Dictionary of the Church, A User Friendly Reference for Episcopalians,” Don S. Armentrout and Robert Boak Slocum, editors.