
• (n.) A work made across or in the ditch, to protect it from the enemy, or to serve as a covered passageway.
Found on
http://thinkexist.com/dictionary/meaning/caponiere/
Cap`o·niere' noun [ French
caponnière , from Spanish
caponera , orig., a cage for fattening capons, hence, a place of refuge; confer Italian
capponiera . See
Capon .]
(Fort.) A work made across or in the ditch, to protect it from the enemy, or to serve as a covered ...
Found on
http://www.encyclo.co.uk/webster/C/21

In fortifications a caponiere is a work made across or in a ditch, to protect it from the enemy, or to serve as a covered passageway. When there is a parapet on one side only it is called a demi-caponiere.
Found on
http://www.probertencyclopaedia.com/browse/FC.HTM
No exact match found.