Illusion

Part of speech: noun (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 charning; enchantment; witchery; glamour. Ye soft illusions, dear deceits, arise! Pope.

3. 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.

4. A plain, delicate lace, usually of silk, used for veils, scarfs, dresses, etc.

Synonyms: 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. E. Edwards.