WordNet (r) 3.0 (2006):

Elvis
    n 1: street name for lysergic acid diethylamide [syn: acid,
         back breaker, battery-acid, dose, dot, Elvis,
         loony toons, Lucy in the sky with diamonds, pane,
         superman, window pane, Zen]

The Free On-line Dictionary of Computing (30 December 2018):

Elvis

    A vi lookalike which supports nearly all of the vi/ex
   commands, in both visual mode and colon mode.

   Like vi/ex, elvis stores most of the text in a temporary file
   instead of RAM.  This allows it to edit files that are too
   large to fit in a single process' data space.

   Elvis runs under BSD UNIX, AT&T SysV UNIX, MINIX,
   MS-DOS, Atari TOS, Coherent, OS9/68000, VMS,
   Windows 95 and Windows NT.

   Elvis is just as awful to use as vi, so someone will like it.

   Version 1.8pl14 (1995-09-04).

   FTP Delft (ftp://dutepp0.et.tudelft.nl/pub/Unix/Editors/),
   FTP PDX (ftp://ftp.cs.pdx.edu/pub/elvis/).

   E-mail: Steve Kirkendall .

   (1995-11-16)