A smackhead is a person who is severly dependent on heroin (smack)
You dirty smackhead
by peter peter the foreskin eater January 31, 2003
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The local druggie, zombie like in appearance but less intelligent. Addicted to the drug known Heroin or ''brown'', common in ex pit villages in the north of England.

Smackheads are generally scummy people who deserve no sympathy, will put the well being of their own children to get their fix. They will lie, cheat, steal use and abuse well meaning people such as family and friends to get there next fix.
Mick the smackhead was injecting heroin again while his kids starve because they have no food.
by bigdave12345 May 13, 2018
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"That Jim Reynolds is a right smackhead, y' wordtwonk/word with right bad breath"
by Halo August 30, 2003
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someone who likes to brag about taking drugs...in other words a dickhead u would liek to smack.
by dan December 14, 2003
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