sponson

noun spon·son \ ˈspän(t)-sən \

Definition of sponson

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

Recent Examples of sponson from the Web

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Origin and Etymology of sponson

perhaps by shortening & alteration from expansion


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of very fine texture or delicate form

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