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Dam

dam

Dam definitions
noun
dam dams
  1. a barrier constructed to hold back water and raise its level, forming a reservoir used to generate electricity or as a water supply

    "the dam burst after torrential rain"

    • a barrier of branches in a stream, constructed by a beaver to provide a deep pool and a lodge
    • an artificial pond or reservoir where rain or spring water is collected for storage

      "the dam was full of water"

  2. a rubber sheet used to keep saliva from the teeth during dental operations, or as a prophylactic device during cunnilingus and anilingus
verb
dams damming dammed dam
  1. build a dam across (a river or lake)

    "the river was dammed to form Lake Powell"

    block (up) obstruct choke clog (up) bung up close
    • hold back or obstruct (something)

      "the closed lock gates dammed up the canal"