
`Chasing the dragon` ({zh|t=追龍|s=追龙|j=zeoi1 lung4|p=zhuī lóng|first=t}) is a slang phrase of Cantonese origin from Hong Kong referring to inhaling the vapor from heated morphine, heroin, oxycodone or opium. The `chasing` occurs as the user gingerly keeps the liquid moving in order to keep it from coalescing into a single, unmanageabl...
Found on
http://en.wikipedia.org/wiki/Chasing_the_dragon

Chasing the dragon: A practice of heroin use involving heating heroin and then inhaling it. Some heroin users have gone to this practice because they believe erroneously that it will protect them against contracting HIV and other diseases associated with injecting heroin. 'Chasing the dragon' carries a risk of untreatable brain damage with death oc...
Found on
http://www.medterms.com/script/main/art.asp?articlekey=11078

Chasing the dragon is slang for smoking heroin or opium.
Found on
http://www.probertencyclopaedia.com/browse/ZC.HTM
No exact match found.