The Collaborative International Dictionary of English v.0.48:

Jub'e \Ju`b['e]"\, n. [F.] (Arch.) (a)
   A chancel screen or rood screen.
   (b) The gallery above such a screen, from which certain parts
       of the service were formerly read. See Rood loft, under
       Rood.
       [1913 Webster]