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dam  (dams plural & 3rd person present) (damming present participle) (dammed past tense & past participle )
1  n-count A dam is a wall that is built across a river in order to stop the water flowing and to make a lake. 
...plans to build a dam on the Danube River.  
2  verb To dam a river means to build a dam across it. 
...plans to dam the nearby Delaware River...  V n 



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