emacs lisp

from The Free On-line Dictionary of Computing (8 July 2008)

Emacs Lisp

   <language> A dialect of {Lisp} used to implement the higher
   layers of the {Free Software Foundation}'s editor, {GNU}
   {Emacs}.  Sometimes abbreviated to "{elisp}".  An enormous
   number of Emacs Lisp packages have been written including
   modes for editing many programming languages and interfaces to
   many {Unix} programs.