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1. Oxford American Dictionary

   dam

   • IPA[dam]

   美式

   • n.
     a barrier constructed to hold back water and raise its level, forming a reservoir used to generate electricity or as a water supply；a barrier of branches in a stream, constructed by a beaver to provide a deep pool and a lodge.
   • v.
     build a dam across (a river or lake)；hold back or obstruct (something)

   • noun: dam, plural noun: dams

2. • 釋義

   n.

   名詞

   • 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 the Hoover Dam
   • ▪ a barrier of branches in a stream, constructed by a beaver to provide a deep pool and a lodge.
   • 2. a rubber sheet used to keep saliva from the teeth during dental operations, or as a prophylactic device during cunnilingus and anilingus.

   v.

   動詞

   • 1. build a dam across (a river or lake) the river was dammed to form Lake Powell
   • ▪ hold back or obstruct (something) the closed lock gates dammed up the canal discussion was in full flow and refused to be dammed