Source : WordNet®

debug
     v : locate and correct errors in a computer program code; "debug
         this program"
     [also: {debugging}, {debugged}]

Source : Free On-Line Dictionary of Computing

DEBUG
     
         The bundled {compiler}/{assembler} for
        {DOS}/{Windows} after {CP/M}.
     
        [Did CP/M have "DEBUG"?]
     
        ["DOS Power Tools, Techniques, Tricks, and Utilities, PC
        Magazine, Paul Somerson Executive Editor, Bantam Books, 1988].
     
        (2003-06-17)