D defs.my
Entry 1 sense Webster, 1913

matriarchal

/mātˌ-rē-är'-kəl/ · ma·tri·ar·chal · IPA /mˌeɪtriːˈɑrkəl/
01 a. Of or pertaining to a matriarch; governed by a matriarch or matriarchs; as, a matriarchal society.
  1. 1.
    Of or pertaining to a matriarch; governed by a matriarch or matriarchs; as, a matriarchal society.