il·lu·sion /ɪˈluʒən/
  幻影,錯覺,幻想
  il·lu·sion /ɪlˈuʒən/ 名詞
  錯覺,幻覺
  Il·lu·sion n.
  1. An unreal image presented to the bodily or mental vision; a deceptive appearance; a false show; mockery; hallucination.
     To cheat the eye with blear illusions.   --Milton.
  2. Hence: Anything agreeably fascinating and charming; enchantment; witchery; glamour.
     Ye soft illusions, dear deceits, arise!   --Pope.
  3. Physiol. A sensation originated by some external object, but so modified as in any way to lead to an erroneous perception; as when the rolling of a wagon is mistaken for thunder.
  Note: ☞ Some modern writers distinguish between an illusion and hallucination, regarding the former as originating with some external object, and the latter as having no objective occasion whatever.
  4. A plain, delicate lace, usually of silk, used for veils, scarfs, dresses, etc.
  Syn: -- Delusion; mockery; deception; chimera; fallacy. See Delusion. Illusion, Delusion. Illusion refers particularly to errors of the sense; delusion to false hopes or deceptions of the mind. An optical deception is an illusion; a false opinion is a delusion.
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  illusion
       n 1: an erroneous mental representation [syn: semblance]
       2: something many people believe that is false; "they have the
          illusion that I am very wealthy" [syn: fantasy, phantasy,
           fancy]
       3: the act of deluding; deception by creating illusory ideas
          [syn: delusion, head game]
       4: an illusory feat; considered magical by naive observers
          [syn: magic trick, conjuring trick, trick, magic,
          legerdemain, conjuration, deception]