We found 2 dictionaries that define the word heroin addicts:

General (2 matching dictionaries)

1. heroin addicts: Collins English Dictionary
2. heroin addicts: Vocabulary.com

(Note: See heroin_addict as well.)

Definitions from WordNet (heroin addict) ▸ noun:  someone addicted to heroin ▸ Also see heroin_addict ▸ Words similar to heroin addicts ▸ Usage examples for heroin addicts ▸ Idioms related to heroin addicts ▸ Wikipedia articles (New!) ▸ Words that often appear near heroin addicts ▸ Rhymes of heroin addicts ▸ Invented words related to heroin addicts