hallucinate
verb [ I ] uk/həˈluː.sɪ.neɪt/ us/həˈluː.sə.neɪt/
（因生病或吸毒而）产生幻觉
to seem to see, hear, feel, or smell something that does not exist, usually because you are ill or have taken a drug
Mental disorders, drug use, and hypnosis can all cause people to hallucinate. 精神失常、吸毒和催眠术都可以使人产生幻觉。