Source : Webster's Revised Unabridged Dictionary (1913)

Delirium \De*lir"i*um\, n. [L., fr. delirare to rave, to wander
   in mind, prop., to go out of the furrow in plowing; de- +
   lira furrow, track; perh. akin to G. geleise track, rut, and
   E. last to endure.]
   1. (Med.) A state in which the thoughts, expressions, and
      actions are wild, irregular, and incoherent; mental
      aberration; a roving or wandering of the mind, -- usually
      dependent on a fever or some other disease, and so
      distinguished from mania, or madness.

   2. Strong excitement; wild enthusiasm; madness.

            The popular delirium [of the French Revolution] at
            first caught his enthusiastic mind.   --W. Irving.

            The delirium of the preceding session (of
            Parliament).                          --Morley.

   {Delirium tremens}. [L., trembling delirium] (Med.), a
      violent delirium induced by the excessive and prolonged
      use of intoxicating liquors.

Source : WordNet®

delirium tremens
     n : acute delirium caused by alcohol poisoning [syn: {DTs}]