Source : Webster's Revised Unabridged Dictionary (1913)

Bomb \Bomb\, n. [F. bombe bombshell, fr. L. bombus a humming or
   buzzing noise, Gr. ?.]
   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.'' --Darwin.

Bomb \Bomb\, v. i. [Cf. {Boom}.]
   To sound; to boom; to make a humming or buzzing sound. [Obs.]
   --B. Jonson.

Bomb \Bomb\, v. t.
   To bombard. [Obs.] --Prior.

Source : WordNet®

bomb
     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}]

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}]

Source : Free On-Line Dictionary of Computing

bomb
     
        1.  General synonym for {crash} except that it is
        not used as a noun.  Especially used of software or {OS}
        failures.  "Don't run Empire with less than 32K stack, it'll
        bomb".
     
        2.  {Atari ST} and {Macintosh} equivalents
        of a {Unix} "{panic}" or {Amiga} {guru}, in which {icon}s of
        little black-powder bombs or mushroom clouds are displayed,
        indicating that the system has died.  On the {Macintosh}, this
        may be accompanied by a decimal (or occasionally
        {hexadecimal}) number indicating what went wrong, similar to
        the {Amiga} {guru meditation} number.  {MS-DOS} computers tend
        to {lock up} in this situation.
     
        3.  A piece of code embedded in a program that
        remains dormant until it is triggered.  Logic bombs are
        triggered by an event whereas time bombs are triggered either
        after a set amount of time has elapsed, or when a specific
        date is reached.
     
        [{Jargon File}]
     
        (1996-12-08)