freebase
verb [ T ] slang uk/ˈfriː.beɪs/ us/ˈfriː.beɪs/
加热吸用精炼可卡因
to smoke a specially prepared form of the drug cocaine
Cocaine causes addiction, particularly when freebased. 可卡因会导致上瘾，特别是加热吸用的话。
An individual who heavily freebases cocaine could use up to one ounce of that drug per day. 加热吸用可卡因的人每天可能吸用多达一盎司。
See: freebasing