DCHP-1 Online
floating swamp 
a detached mass of swamp vegetation floating on the surface of the water.
- 1829 We are led to think that the enormous quantities of drift wood, floating swamps . . . soils of all kinds, &c. hurried into Lake Ontario annually, would conduce towards the formation of islands and shoals in the same. . . .
- 1829 We are led to think that the enormous quantities of drift wood, floating swamps . . . soils of all kinds, &c. hurried into Lake Ontario annually, would conduce towards the formation of islands and shoals in the same. . . .