Definition of "heroin addict" []

• Someone addicted to heroin (noun)

WordNet. Princeton University. 2010.

• "In spite of the fact it was my third mission, that it wasn’t going to make my astronaut pin any more “golden,” and that I was scared out of my wits, I stillneeded this mission as desperately as a heroin addict needs his fix."
• "He was a recovering heroin addict and now a regular at a methadone outpatient clinic who ran a tidy used-book store from a card table inside the northeast corner of Tompkins Square Park."