1. v. General synonym for crash (sense 1) except that it is not used as a noun; esp. used of software or OS failures. “Don't run Empire with less than 32K stack, it'll bomb.”
2. n.,v. Atari ST and Macintosh equivalents of a Unix panic or Amiga guru meditation, in which icons of little black-powder bombs or mushroom clouds are displayed, indicating that the system has died. On the Mac, this may be accompanied by a decimal (or occasionally hexadecimal) number indicating what went wrong, similar to the Amiga guru meditation number. MS-DOS machines tend to get locked up in this situation.