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Battering-ram

资料来源 : Webster's Revised Unabridged Dictionary (1913)

Battering-ram \Bat"ter*ing-ram`\, n.
   1. (Mil.) An engine used in ancient times to beat down the
      walls of besieged places.

   Note: It was a large beam, with a head of iron, which was
         sometimes made to resemble the head of a ram. It was
         suspended by ropes to a beam supported by posts, and so
         balanced as to swing backward and forward, and was
         impelled by men against the wall. --Grose.

   2. A blacksmith's hammer, suspended, and worked horizontally.
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