1. （吸毒）成瘾的，上瘾的
Someone who is addicted to a harmful drug cannot stop taking it.

2. 入迷的;着迷的
If you say that someone is addicted to something, you mean that they like it very much and want to spend as much time doing it as possible.

1. compulsively or physiologically dependent on something habit-forming

e.g. she is addicted to chocolate
addicted to cocaine