bomb /ˈbɑm/
  炸彈,爆炸,爆炸性事件(v.)轟炸,炸燬
  bomb
  炸彈
  bomb
  炸彈
  Bomb n.
  1. A great noise; a hollow sound. [Obs.]
     A pillar of iron . . . which if you had struck, would make . . . a great bomb in the chamber beneath.   --Bacon.
  2. Mil. A shell; esp. a spherical shell, like those fired from mortars. See Shell.
  3. A bomb ketch.
  Bomb chest Mil., a chest filled with bombs, or only with gunpowder, placed under ground, to cause destruction by its explosion.
  Bomb ketch, Bomb vessel Naut., a small ketch or vessel, very strongly built, on which mortars are mounted to be used in naval bombardments; -- called also mortar vessel.
  Bomb lance, a lance or harpoon with an explosive head, used in whale fishing.
  Volcanic bomb, a mass of lava of a spherical or pear shape. “I noticed volcanic bombs.”
  Bomb, v. t. To bombard. [Obs.]
  Bomb, v. i.  To sound; to boom; to make a humming or buzzing sound. [Obs.]
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  bomb
       n 1: an explosive device fused to denote under specific
            conditions
       2: strong sealed vessel for measuring heat of combustion [syn:
          bomb calorimeter]
       3: an event that fails badly or is totally ineffectual; "the
          first experiment was a real turkey"; "the meeting was a
          dud as far as new business was concerned" [syn: turkey,
          dud]
       v 1: throw bombs at or attack with bombs; "The Americans bombed
            Dresden" [syn: bombard]
       2: fail to get a passing grade; "She studied hard but failed
          nevertheless"; "Did I fail the test?" [syn: fail, flunk,
           flush it] [ant: pass]