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(Military) (formerly) a muster of men in a particular area in Scotland to show that they were properly armed
[C16: from Northern English wapen, from Old Norse vápn weapon + schaw show]
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
wap•pen•shaw(ˈwɒp ənˌʃɔ, ˈwæp-)
a periodic review of troops formerly held in Scotland to satisfy military chiefs that their men were loyal and properly armed.
[1495–1505; short for wappenshawing (Scots) =wappen (Old English wǣpna, genitive pl. of wǣp(e)n weapon) + shawing showing (see show, -ing1); compare Dutch wapenschouwing]
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
Wappenshawa Scottish term for a muster of men and armour, 1503; a volunteer rifle meeting, 1868—Wilkes.
Dictionary of Collective Nouns and Group Terms. Copyright 2008 The Gale Group, Inc. All rights reserved.