Definition of swamp noun from the Oxford Advanced Learner's Dictionary



BrE BrE//swɒmp//
; NAmE NAmE//swɑːmp//
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[countable, uncountable] an area of ground that is very wet or covered with water and in which plants, trees, etc. are growing synonym marsh tropical swamps The country contains around 700 square km of swamp. Word Originearly 17th cent.: probably ultimately from a Germanic base meaning ‘sponge’ or ‘fungus’.
See the Oxford Advanced American Dictionary entry: swamp