immediate family member
(1) As used in this section— (A) the term “course of conduct” means a series of acts over a period of time, however short, indicating a continuity of purpose; (B) the term “harassment” means a serious act or course of conduct directed at a specific person that— (i) causes substantial emotional distress in such person; and (ii) serves no legitimate purpose; (C) the term “immediate family member” has the meaning given that term in section 115 and includes grandchildren; (D) the term “intimidation” means a serious act or course of conduct directed at a specific person that— (i) causes fear or apprehension in such person; and (ii) serves no legitimate purpose; (E) the term “restricted personal information” has the meaning give that term in section 119; (F) the term “serious act” means a single act of threatening, retaliatory, harassing, or violent conduct that is reasonably likely to influence the willingness of a victim or witness to testify or participate in a Federal criminal case or investigation; and (G) the term “specific person” means a victim or witness in a Federal criminal case or investigation, and includes an immediate family member of such a victim or witness.