noun
a person who is addicted to or frequently uses pills, especially prescription drugs
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The doctor warned about the dangers of becoming a pillhead due to excessive use of prescription medication.
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I heard that guy is a total pillhead, always popping painkillers for every little ache.
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Don't hang out with that pillhead, he's always looking for a quick fix.
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His addiction to social media turned him into a digital pillhead, constantly seeking validation online.