Real Dictionary

swamp
If you are swamped by things or people, you have more of them than you can deal with.
variable noun: A swamp is an area of very wet land with wild plants growing in it.
verb: If something swamps a place or object, it fills it with water.

swamp in American English
a piece of wet, spongy land that is permanently or periodically covered with water, characterized by growths of shrubs and trees; marsh; bog
of or native to a swamp
to plunge or sink in a swamp, deep water, etc.
intransitive verb: to fill with water and sink, as a boat
noun: a tract of wet, spongy land, often having a growth of certain types of trees and other vegetation, but unfit for cultivation
transitive verb: to flood or drench with water or the like

swamp in British English
noun: permanently waterlogged ground that is usually overgrown and sometimes partly forested
verb: to drench or submerge or be drenched or submerged