rood screenn. In medieval churches, an often openwork wall-like screen separating the choir from the nave and extending upward to the rood beam.American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.rood screen n (Architecture) a partition of stone or wood, often richly carved and decorated, that separates the chancel from the main part of a church: it is surmounted by a crucifix (rood), and was an important feature of medieval churches, though in England many rood screens were destroyed at the Reformation Collins English Dictionary ? Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014rood? screen` n. a screen separating the nave from the choir or chancel of a church. [1835?45] Random House Kernerman Webster’s College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.