junkie

1. N-COUNT A junkie is a drug addict. 吸毒成瘾者[非正式]

...those desperate junkies who have tried every known drug. …那些试遍每一种已知毒品、不可救药的吸毒成瘾的人。

2. N-COUNT You can use junkie to refer to someone who is very interested in a particular activity, especially when they spend a lot of time on it. 迷[非正式]

...a computer junkie. …一个计算机迷。