re·ta·ble  (r ēt ā′b əl, r ĕt ə-)
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n. A structure forming the back of an altar, especially: a. An overhanging shelf for lights and ornaments. b. A frame enclosing painted panels.
[French, from Spanish retablo, from alteration of Catalan retaule, from earlier reataula, from Medieval Latin retrōtabulum : Latin retrō-, retro- + Latin tabula, tablet, board.]  (click for a larger image) retablealtarpiece for the chapel of the Casa de Contratación at the Alcázar Seville, Spain |