Drug abuse A person, usually an IV narcotic abusing addict, whose existence revolves around obtaining—often through theft, prostitution or other illicit means—the next ‘fix’ of narcotics, known in some circles as ‘junk’
Vox populi The term junkie has been commandeered in the popular culture, and applied to anyone with an ‘addiction’ for a particular food or habit—e.g., fashion junkie
junkie Popular health A popular term for a person, usually an IV narcotic abusing addict, whose life is disorganized vis-á-vis family and societal structure, whose existence revolves around obtaining–often through theft, prostitution or other illicit means of another 'fix' of narcotic. See Cold turkey, Shooting galleries.
junky A slang term for a narcotic, especially heroin, addict.