The Collaborative International Dictionary of English v.0.48:

ID \ID\, ID \I.D.\([imac]`d[=e]"), n. [capitalized] [shortened
   form of identification.]
   any document testifying to the identity of the bearer,
   especially a card or badge.

   Syn: ID.
        [WordNet 1.5]

The Collaborative International Dictionary of English v.0.48:

I'd \I'd\
   A contraction from I would or I had; as, I'd go if I could.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Id \Id\, n. (Zool.)
   A small fresh-water cyprinoid fish (Leuciscus idus or Idus
   idus) of Europe. A domesticated variety, colored like the
   goldfish, is called orfe in Germany.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

id \id\ ([i^]d), n. (Psychoanalysis)
   That part of a person's psyche which is the unconscious
   source of impulses seeking gratification or pleasure; the
   impulses are usually modified by the ego and superego
   before being acted upon.
   [PJC]

The Collaborative International Dictionary of English v.0.48:

Idem \I"dem\, pron. or adj. [L.]
   The same; the same as above; -- often abbreviated id.
   [1913 Webster]

WordNet (r) 3.0 (2006):

ID
    n 1: a state in the Rocky Mountains [syn: Idaho, Gem State,
         ID]
    2: a card or badge used to identify the bearer; "you had to show
       your ID in order to get in" [syn: ID, I.D.]
    3: (psychoanalysis) primitive instincts and energies underlying
       all psychic activity

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

id

    The country code for Indonesia.

   (1999-01-27)


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

Irvine Dataflow
Id

    (Always called "Id") A non-strict, single
   assignment language and incremental compiler developed by
   Arvind and Gostelow and used on MIT's Tagged-Token Dataflow
   Architecture and planned to be used on Motorola's
   Monsoon.

   See also Id Nouveau.

   ["An Asynchronous Programming Language for a Large
   Multiprocessor Machine", Arvind et al, TR114a, Dept ISC, UC
   Irvine, Dec 1978].

   ["The U-Interpreter", Arvind et al, Computer 15(2):42-50,
   1982].

   (1998-02-14)