matrilinear
/ˌmætrɪˈlɪniːə/based on or tracing descent through the female line; "matrilineal inheritance"
adjective [原级] 母系的
In matrilinear societies the real head of the family is the mother's brother. 在母系社会中，家庭里真正的头领是妈妈的兄弟。
