stalker /ˈstɔːkə/

• 1. 

  N-COUNT A stalker is someone who keeps following or contacting someone else, especially a famous person or a person they used to have a relationship with, in an annoying and frightening way. 骚扰者; 纠缠者

  例：

  She had been followed and then trapped by a stalker.

  她曾被一骚扰者跟踪，然后中了他的圈套。