also: やくをやる
expression, godan verb (-ru)
do drugs; take illicit drugs
Slangy expression for using illegal drugs. The verb やる is a casual, often rough way to say 'do'.
あいつ、またクスリをやって捕まったらしい。
I heard that guy got caught doing drugs again.
ヤクをやるような人間とは付き合いたくない。
I don't want to associate with people who do drugs.