"screen behind an altar," late 14c., from Anglo-French rere-, archaic combining form of rear (n.), + dos "back" (see dossier). Klein's sources suggest it is aphetic of Anglo-French areredos, from Old French arere "at the back" (Modern French arrière).
requisitioner
requital
requite
re-read
re-record
reredos
re-route
rerun
res ipsa loquitur
res judicata
resale