[CO- 3 b.] Arbiter along with another or others. Hence Co-arbitress, a female co-arbiter. Also Co-arbitration.
1598. Hakluyt, Voy., I. 153. The friendly composition made by the hono. personages with the assistance of their coarbiters on our part.
1879. J. Todhunter, Alcestis, 121. Persephone, August co-arbitress of Hades realm.