Definition of junkie noun from the Oxford Advanced Learner's Dictionary



BrE BrE//ˈdʒʌŋki//
; NAmE NAmE//ˈdʒʌŋki//
(informal) Addiction
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a drug addict (= a person who is unable to stop taking dangerous drugs) See related entries: Addiction Word Origin 1920s (originally US): from junk ‘heroin’.
See the Oxford Advanced American Dictionary entry: junkie