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1. An outer or enclosing wall, especially one connecting two towers or turrets, as in a medieval fortification.
2. A nonbearing wall, often of glass and steel, fixed to the outside of a building and serving especially as cladding.
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.
1. (Architecture) a non-load-bearing external wall attached to a framed structure, often one that is prefabricated
2. (Fortifications) a low wall outside the outer wall of a castle, serving as a first line of defence
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
(in a framed building) an exterior wall having no structural function.
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.