rood screen

from The American Heritage® Dictionary of the English Language, 5th Edition.

• noun In medieval churches, an often openwork wall-like screen separating the choir from the nave and extending upward to the rood beam.

from The Century Dictionary.

• noun A screen or ornamental partition separating the choir of a church from the nave, and (properly) supporting the rood or crucifix. See cuts under rood-loft and cathedral.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun architecture A carved screen that separated the chancel and nave in a medieval church; it originally carried a large crucifix

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• noun a screen in a church; separates the nave from the choir or chancel