Definition of batardeau

• n. - A cofferdam.
• 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.
• 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.