The Collaborative International Dictionary of English v.0.48:

Distraction \Dis*trac"tion\, n. [L. distractio: cf. F.
   distraction.]
   1. The act of distracting; a drawing apart; separation.
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            To create distractions among us.      --Bp. Burnet.
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   2. That which diverts attention; a diversion. "Domestic
      distractions." --G. Eliot.
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   3. A diversity of direction; detachment. [Obs.]
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            His power went out in such distractions as
            Beguiled all species.                 --Shak.
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   4. State in which the attention is called in different ways;
      confusion; perplexity.
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            That ye may attend upon the Lord without
            distraction.                          --1 Cor. vii.
                                                  35.
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   5. Confusion of affairs; tumult; disorder; as, political
      distractions.
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            Never was known a night of such distraction.
                                                  --Dryden.
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   6. Agitation from violent emotions; perturbation of mind;
      despair.
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            The distraction of the children, who saw both their
            parents together, would have melted the hardest
            heart.                                --Tatler.
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   7. Derangement of the mind; madness. --Atterbury.

   Syn: Perplexity; confusion; disturbance; disorder;
        dissension; tumult; derangement; madness; raving;
        franticness; furiousness.
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WordNet (r) 3.0 (2006):

distraction
    n 1: mental turmoil; "he drives me to distraction"
    2: an obstacle to attention
    3: an entertainment that provokes pleased interest and distracts
       you from worries and vexations [syn: beguilement,
       distraction]
    4: the act of distracting; drawing someone's attention away from
       something; "conjurers are experts at misdirection" [syn:
       distraction, misdirection]

Moby Thesaurus II by Grady Ward, 1.0:

99 Moby Thesaurus words for "distraction":
   aberration, abnormality, absentmindedness, agitation, alienation,
   amusement, befuddlement, bewilderment, brain damage, brainsickness,
   carelessness, clouded mind, confusion, craziness, daftness,
   dementedness, dementia, derangement, disorder, disorientation,
   disregard, disregardfulness, dissipation, disturbance, diversion,
   divertissement, entertainment, flightiness, flippancy, folie,
   frivolousness, furor, giddiness, heedlessness, inadvertence,
   inadvertency, inattention, inattentiveness, inconsideration,
   incuriosity, indifference, inobservance, insaneness, insanity,
   irrationality, levity, lightmindedness, loss of mind,
   loss of reason, lunacy, madness, mania, mental deficiency,
   mental derangement, mental disease, mental disorder,
   mental disturbance, mental illness, mental instability,
   mental sickness, mind overthrown, mindsickness, negligence,
   nonobservance, obliviousness, oddness, pixilation, possession,
   psychopathy, queerness, rabidness, reasonlessness, recreation,
   regardlessness, senselessness, shallowness, shattered mind,
   sick mind, sickness, strangeness, superficiality, thoughtlessness,
   unalertness, unawareness, unbalance, unbalanced mind,
   unconsciousness, unheedfulness, unintentiveness, unmindfulness,
   unobservance, unsaneness, unsound mind, unsoundness,
   unsoundness of mind, unwariness, unwatchfulness, upset,
   witlessness