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

Moby Thesaurus II by Grady Ward, 1.0:

44 Moby Thesaurus words for "id":
   anima, archetypal pattern, archetype, blind impulse, coconscious,
   collective unconscious, conscience, conscious self, death instinct,
   ego, ego ideal, ego-id conflict, ethical self, foreconscious,
   impulse, inborn proclivity, instinct, libidinal energy, libido,
   mind, motive force, natural instinct, natural tendency, persona,
   personality, pleasure principle, preconscious, primitive self,
   psyche, psychic apparatus, racial unconscious, self, subconscious,
   subconscious mind, subconscious urge, subliminal, subliminal self,
   submerged mind, superego, unconscious, unconscious mind,
   unlearned capacity, unreasoning impulse, vital impulse



V.E.R.A. -- Virtual Entity of Relevant Acronyms (February 2016):

ID
       IDentification


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

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)


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

id

    The country code for Indonesia.

   (1999-01-27)