A heroin addict, normally someone who shoots or smokes meth. Using the term smack, in the [slang because normally heroin causes people to nod out, making someone come up and smack em on the head.

C'mon Charlie! Get up. *Smacks the back of Charlie's head* Quit bein a stupid smackhead! We got shit to do

Smackhead by Suuuuuheilyyyy October 3, 2017

smackhead

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.

smackhead by bigdave12345 June 5, 2018

Smackhead

A resident of Dublin, Ireland

- Awwwrite bud. Whas da stooory?

- Fuckin' jackeen smackhead in my face, that's the story.

Smackhead by Siucra Ray October 11, 2006

smackhead

Someone who is reliant on drugs.

"That Jim Reynolds is a right smackhead, y' wordtwonk/word with right bad breath"

smackhead by Halo August 30, 2003