ed

from 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}]

from 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]

from Jargon File (4.4.4, 14 Aug 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 Programmer}s, 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).

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

ed

   <tool, text> (editor) {Unix}'s {line editor}.  Ed is rarely
   used by humans since even {vi} is better.

   {Unix manual page}: ed(1).

   (1999-03-01)

from V.E.R.A. -- Virtual Entity of Relevant Acronyms (June 2006)

ED
       End Delimiter (FDDI, Token Ring)

from V.E.R.A. -- Virtual Entity of Relevant Acronyms (June 2006)

ED
       Enhanced Density

from Easton's 1897 Bible Dictionary

Ed
witness, a word not found in the original Hebrew, nor in the
LXX. and Vulgate, but added by the translators in the Authorized
Version, also in the Revised Version, of Josh. 22:34. The words
are literally rendered: "And the children of Reuben and the
children of Gad named the altar. It is a witness between us that
Jehovah is God." This great altar stood probably on the east
side of the Jordan, in the land of Gilead, "over against the
land of Canaan." After the division of the Promised Land, the
tribes of Reuben and Gad and the half-tribe of Manasseh, on
returning to their own settlements on the east of Jordan (Josh.
22:1-6), erected a great altar, which they affirmed, in answer
to the challenge of the other tribes, was not for sacrifice, but
only as a witness ('Ed) or testimony to future generations that
they still retained the same interest in the nation as the other
tribes.