Source : WordNet®

EXEC
     n : the chief executive department of the United States
         government [syn: {White House}]

Source : Free On-Line Dictionary of Computing

EXEC
     
         An early {batch} language for the {IBM} {VM/CMS}
        systems.
     
        [SC19-6209 Virtual Machine/ System Product CMS Command and
        Macro Reference, Appendix F. CMS EXEC Control Statements].
     
        [Was {EXEC 2} was a later version?]
     
        (2000-08-06)

exec
     
        /eg-zek'/  1. execute.
     
        A synonym for {chain} derived from the {Unix} "exec" {system
        call}.
     
        {Unix manual page}: execve(2).
     
        2. (Obsolete) {executive}.
     
        The mainstream "exec" as an abbreviation for (human) executive
        is *not* used.  To a hacker, an "exec" is a always a program,
        never a person.
     
        3. At {IBM} and {VM}/{CMS} shops, the equivalent of a {shell}
        command file.
     
        4.  The innermost {kernel} of the {Amiga}
        {operating system} which provides shared-library support,
        device interface, {memory management}, {CPU} management, basic
        {IPC}, and the basic structures for OS extension.  The rest of
        the Amiga OS (windowing, file system, third-party extensions,
        etc.) is built using these structures.
     
        [{Jargon File}]
     
        (1997-08-01)