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English definition of “narcolepsy”

narcolepsy

noun [U] uk   /ˈnɑː.kə.lep.si/ us    /ˈnɑːr.kə-/
a medical condition that makes you go to sleep suddenly and when you do not expect itDisorders of muscles and the nervous system
narcoleptic
noun [C], adjective uk   /ˌnɑː.kəˈlep.tɪk/ us    /ˌnɑːr.kə-/
Disorders of muscles and the nervous system
(Definition of narcolepsy from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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