Batardeau

• (n.) A wall built across the ditch of a fortification, with a sluice gate to regulate the height of water in the ditch on both sides of the wall. • (n.) A cofferdam.
Found on http://thinkexist.com/dictionary/meaning/batardeau/

Batardeau

Ba`tar·deau' noun [ French] 1. A cofferdam. Brande & C. 2. (Mil.) A wall built across the ditch of a fortification, with a sluice gate to regulate the height of water in the ditch on both sides of the wall.
Found on http://www.encyclo.co.uk/webster/B/21

Batardeau

A batardeau is a wall built across the ditch of a fortification, with a sluice gate to regulate the height of water in the ditch on both sides of the wall.
Found on http://www.probertencyclopaedia.com/browse/FB.HTM
No exact match found