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English definition of “dam”

dam

noun [C]     /dæm/
a strong wall built across a river to stop the water and make a lakeDitches, dams and tunnels
dam verb [T] (present participle damming, past tense and past participle dammed) to build a dam across a riverDitches, dams and tunnels
(Definition of dam noun from the Cambridge Learner's Dictionary © Cambridge University Press)

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