term:

Stalking

stalking n

: the act or crime of willfully and repeatedly following or harassing another person in circumstances that would cause a reasonable person to fear injury or death esp. because of express or implied threats
;broadly
: a crime of engaging in a course of conduct directed at a person that serves no legitimate purpose and seriously alarms, annoys, or intimidates that person NOTE: Stalking is often considered to be aggravated when the conduct involved also violates a restraining order protecting the victim.