Hallucination - Definition
hallucination
n 1: illusory perception; a common symptom of severe mental
disorder
2: a mistaken or unfounded opinion or idea; "he has delusions of
competence"; "his dreams of vast wealth are a hallucination"
[syn: delusion, hallucination]
3: an object perceived during a hallucinatory episode; "he
refused to believe that the angel was a hallucination"