caponier

(redirected from Caponnière)
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caponier

(ˌkæpəˈnɪə)
n
a covered passageway built across a ditch as a military defence
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014