'Reredos' definitions:

Definition of 'reredos'

From: WordNet
noun
A painted or carved screen placed above and behind an altar or communion table [syn: altarpiece, reredos]

Definition of 'Reredos'

From: GCIDE
  • Reredos \Rere"dos\ (r?r"d?s), n. [From rear + F. dos back, L. dorsum. Cf. Dorsal.] (Arch.) (a) A screen or partition wall behind an altar. (b) The back of a fireplace. (c) The open hearth, upon which fires were lighted, immediately under the louver, in the center of ancient halls. [Also spelt reredosse.] --Fairholt. [1913 Webster]