a structure projecting from the side or main deck of a vessel to support a gun or the outer edge of a paddle box.
a buoyant appendage at the gunwale of a canoe to resist capsizing.
Aeronautics. a protuberance at the side of a flying-boat hull, designed to increase lateral stability in the water.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
How to use sponson in a sentence
The cutter jingled her full-speed bell while the tackle was still lifting the sponson boat.The Skipper and the Skipped | Holman Day
He leaned on the rail and watched the departure of the officer of the faded blue cap with his crew of the sponson boat.The Skipper and the Skipped | Holman Day
An eager gunner endeavoured to pass one of the tanks, but his gun caught the sponson and slipped off into the mud.A Company of Tanks | W. H. L. Watson
His tun of a torso bulged roundly out in front of me like the sponson of a battleship.Yellowstone Nights | Herbert Quick
A bomb exploded directly beneath the sponson, where the dead body had fallen.Life in a Tank | Richard Haigh
British Dictionary definitions for sponson
navy an outboard support for a gun enabling it to fire fore and aft
a semicircular gun turret on the side of a tank
a float or flotation chamber along the gunwale of a boat or ship
a structural projection from the side of a paddle steamer for supporting a paddle wheel
a structural unit attached to a helicopter fuselage by fixed struts, housing the main landing gear and inflatable flotation bags
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012