The Collaborative International Dictionary of English v.0.48:

Intoxication \In*tox`i*ca"tion\, n.
   1. (Med.) A poisoning, as by a alcoholic or a narcotic
      substance.
      [1913 Webster]

   2. The state of being intoxicated or drunk; inebriation;
      ebriety; drunkenness; the act of intoxicating or making
      drunk.
      [1913 Webster]

   2. A high excitement of mind; an elation which rises to
      enthusiasm, frenzy, or madness.
      [1913 Webster]

            That secret intoxication of pleasure. --Spectator.

   Syn: Drunkenness; inebriation; inebriety; ebriety;
        infatuation; delirium. See Drunkenness.
        [1913 Webster]

WordNet (r) 3.0 (2006):

intoxication
    n 1: the physiological state produced by a poison or other toxic
         substance [syn: poisoning, toxic condition,
         intoxication]
    2: a temporary state resulting from excessive consumption of
       alcohol [syn: drunkenness, inebriation, inebriety,
       intoxication, tipsiness, insobriety] [ant: soberness,
       sobriety]
    3: excitement and elation beyond the bounds of sobriety; "the
       intoxication of wealth and power"