RCW 68.04.330: "Family burial ground."

"Family burial ground" means an area of privately owned land that is designated pursuant to chapter 68.74 RCW for the interment of human remains, and in which interments may be, but are not required to be, restricted to a group of persons who are related to each other by birth, marriage, or adoption. "Family burial ground" includes any mausoleums or columbaria constructed on a family burial ground.