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sponson Definition

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sponson
noun(spon-son)
a projection (such as a gun platform) from the side of a ship or a tank
sponson
noun(spon-son)
an air chamber along a watercraft (such as a canoe) to increase stability and buoyancy
sponson
noun(spon-son)
a light air-filled structure or a winglike part protruding from the hull of a seaplane to steady it on water

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