noun
Slang term for a person addicted to drugs, especially stimulants like methamphetamine. Strongly associated with criminal subculture; not used in formal contexts.
See also: シャブ
あの男は完全にシャブ中だ。
That guy is a total junkie.
シャブ中から抜け出すのはとても難しい。
It's extremely difficult to break free from stimulant addiction.