sponson noun & verb. ['spɒns(ǝ)n] M19.
[Origin unkn.]
A. noun.
1. Each of the triangular platforms fitted as supports fore and aft of the paddle-boxes of a paddle-steamer. M19.

2. A platform projecting from the side of a warship or tank to enable a gun to be trained forward and aft. M19.

3. a. An air-filled buoyancy chamber in a canoe, intended to reduce the risk of sinking. Freq. in sponson canoe. Canad. E20.
b. A projection from the hull or body of a seaplane, intended to increase lateral stability in the water. Also, a stabilizer in the form of a float at the end of a wing. E20.
b. verb trans. Support or set out on a sponson. L19.

[TahlilGaran] English Dictionary ▲