hallucination

英 [hə,luːsɪ'neɪʃ(ə)n] 美[hə,lusɪ'neʃən]

• n. 幻觉，幻想；错觉

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"

3. an object perceived during a hallucinatory episode;

"he refused to believe that the angel was a hallucination"