From Longman Dictionary of Contemporary Englishjunkiejunk‧ie, junky /ˈdʒʌŋki/ noun (plural junkies) [countable] informal 1 MDDADDICTEDsomeone who takes dangerous drugs and is dependent on them2 → a TV/sports etc junkie
Examples from the Corpus
junkie• It is a dangerous part of town - there are thieves and junkies everywhere.• The toilets are often used by junkies who leave their needles lying around on the floor.• My dad's a TV junkie. 