[rere.dos] n [ME, fr. AF areredos, fr. MF arrere behind + dos back, fr. L dorsum--more at arrear] (14c): a usu. ornamental wood or stone screen or partition wall behind an altar
REREDOS
Meaning of REREDOS in English
Merriam-Webster English vocab. Английский словарь Merriam Webster. 2012