Illusion

1. A plain, delicate lace, usually of silk, used for veils, scarfs, dresses, etc.
2. 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.
3. Hence: Anything agreeably fascinating and charning; enchantment; witchery; glamour.
4. An unreal image presented to the bodily or mental vision; a deceptive appearance; a false show; mockery; hallucination.