From Longman Dictionary of Contemporary Englishaltarpieceal‧tar‧piece /ˈɔːltəpiːs $ ˈɒːltər-/ noun [countable] AVPa painting or sculpture behind an altar
Examples from the Corpus
altarpiece• The eastern windows are obscured by a vast Baroque altarpiece.• You only have to visit some of the churches in Rome where his altarpieces hang to see what his naturalist art did.• Doors are joined to make a predella-like altarpiece.• Visitors to Cracow can see this monumental altarpiece only from afar.• In the late sixteenth century, the altarpiece was replaced by a Cigoli, and eventually sold.• The way to the return of the altarpiece now stood open. 