addict

柯林斯词典

1. N-COUNT An addict is someone who takes harmful drugs and cannot stop taking them. (吸毒) 上瘾者
He's only 24 years old and a drug addict. 他只有24岁，可已经是一个瘾君子。
2. N-COUNT If you say that someone is an addict, you mean that they like a particular activity very much and spend as much time doing it as they can. 对…入迷的人
She is a TV addict and watches as much as she can. 她是一个电视迷，看尽可能多的电视。

Some drug addicts turn to crime in order to support their habit .
They were shocked to discover that their daughter was a heroin addict.
It's difficult to wean an addict off cocaine once they're hooked .
He went to a rehabilitation centre where they help addicts to overcome their addiction.
The children were in danger of picking up needles used by crack addicts.