Altarpiece
WordNet
noun
(1) A painted or carved screen placed above and behind an altar or communion table
WiktionaryText
Noun
- a work of art suspended above and behind an altar in a church
- I walked across the concrete to examine the altarpiece of the atomic age. A large crack ran through it. — Atomic John: A truck driver uncovers secrets about the first nuclear bombs, David Samuels December, The New Yorker, 15, 2008 http://www.newyorker.com/reporting/2008/12/15/081215fa_fact_samuels?printable=true