The Collaborative International Dictionary of English v.0.48:

-ed \-ed\
   The termination of the past participle of regular, or weak,
   verbs; also, of analogous participial adjectives from nouns;
   as, pigmented; talented.
   [1913 Webster]

WordNet (r) 3.0 (2006):

ED
    n 1: impotence resulting from a man's inability to have or
         maintain an erection of his penis [syn: erectile
         dysfunction, male erecticle dysfunction, ED]

The Free On-line Dictionary of Computing (19 January 2023):

ed

    (editor) Unix's line editor.  Ed is rarely
   used by humans since even vi is better.

   Unix manual page: ed(1).

   (1999-03-01)


The Jargon File (version 4.4.7, 29 Dec 2003):

ed
 n.

    “ed is the standard text editor.” Line taken from the original Unix
    manual page on ed, an ancient line-oriented editor that is by now used only
    by a few Real Programmers, and even then only for batch operations. The
    original line is sometimes uttered near the beginning of an emacs vs. vi
    holy war on Usenet, with the (vain) hope to quench the discussion before
    it really takes off. Often followed by a standard text describing the many
    virtues of ed (such as the small memory footprint on a Timex Sinclair,
    and the consistent (because nearly non-existent) user interface).