graocracyn.

/ɡreɪˈɒkrəsi/Etymology: < Greek γραο-, γραῦς an old woman + -κρατία government.
society > authority > rule or government > rule of any class or persons > [noun] > of old women
1830 27 484 Madame de Genlis's admired and lamented graocracy.
This entry has not yet been fully updated (first published 1900; most recently modified version published online September 2019).