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English definition of “dam”

dam

noun [C]     /dæm/
a wall built across a river that stops the river's flow and collects the water , especially to make a reservoir (= an artificial lake ) that provides water for an area : The Aswan High Dam is on the River Nile in Egypt. → Compare dykeDitches, dams and tunnels a dental dam
(Definition of dam noun from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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