Source : Webster's Revised Unabridged Dictionary (1913)

Id \Id\, n. (Zo["o]l.)
   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.

Source : WordNet®

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

Source : Free On-Line Dictionary of Computing

Id
     
        {Irvine Dataflow}

id
     
         The {country code} for Indonesia.
     
        (1999-01-27)

I-D
     
        {Internet-Draft}