slang, "crack cocaine addict," by 1986, from crack (in the drug slang sense) + head. In earlier slang, crack-headed meant "crazy" (1796), from the literal sense of crack.
n. a user of crack. (Drugs.) : They brought an eight-year-old crackhead in for treatment.
Dictionary of American Slang and Colloquial Expressions by Richard A. Spears.Fourth Edition. Copyright 2007. Published by McGraw Hill.
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