batardeau [bɑ:tɑ:'dәu]
堤, 堰, 坝, 围堰
Batardeau \Ba`tar*deau"\, n. [F.]
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.
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