Source : Webster's Revised Unabridged Dictionary (1913)

Gid \Gid\, n. [Cf. {Giddy}, a.]
   A disease of sheep, characterized by vertigo; the staggers.
   It is caused by the presence of the C?nurus, a larval
   tapeworm, in the brain. See {C?nurus}.

Source : Free On-Line Dictionary of Computing

gid
     
        1.  {group identifier}.
     
        2.  {global index}.
     
        (1997-01-30)