DNS. domestic.ADJ. (1) Having to do with the home and family relations. (2) Occurring within a country's or state's borders.N. A household servant. domestic partner.N. A person who shares a sexual relationship and a home with another person but is not necessarily married to him or her. domestic relations. N. The branch of law that handles family matters such as divorce, adoption, and custody. domestic violence.N. Violent physical behavior committed by one family member against another