- The definition of a junkie is an addict.
- A person who is addicted to heroin is an example of a junkie.
- A person who is addicted to video games is an example of a video game junkie.
A junkie is an addict.
nounpl. junk·ies Slang
- A narcotics addict, especially one using heroin.
- One who has an insatiable interest or devotion: a sports junkie.