tv. & in. to use (drugs); to take drugs habitually. (Drugs and now widely known.) : I tried to stop using, but I couldn't.
Dictionary of American Slang and Colloquial Expressions by Richard A. Spears.Fourth Edition. Copyright 2007. Published by McGraw Hill.
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American Heritage
Idioms & Phrases
have no use for
Not require something, as in I don't smoke, so I have no use for a lighter. [c. 1600]
Dislike something or someone, as in I have no use for people who won't answer letters. [Second half of 1800s]