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Define the word DEADBEEF

"DEADBEEF" jargon "Jargon File (4.3.1, 29 Jun 2001)"

DEADBEEF /ded-beef/ n. The hexadecimal word-fill pattern for freshly
   allocated memory under a number of IBM environments, including the
   RS/6000. Some modern debugging tools deliberately fill freed memory with
   this value as a way of converting heisenbugs into Bohr bugs. As in
   "Your program is DEADBEEF" (meaning gone, aborted, flushed from memory);
   if you start from an odd half-word boundary, of course, you have
   BEEFDEAD. See also the anecdote under fool and dead beef attack.

"deadbeef" foldoc "The Free On-line Dictionary of Computing (27 SEP 03)"

DEADBEEF
     
         /ded-beef/ The hexadecimal pattern
        used to fill words of freshly allocated memory under a number
        of IBM environments including the RS/6000; equal to
        decimal 3,735,928,559 (unsigned) or -559,038,737 (32-bit
        signed).  As in "Your program is DEADBEEF" (meaning gone,
        aborted, flushed from memory).
     
        (1998-06-29)