[f. prec. + -SHIP.] The position or function of an arbitrator.
1667. Lond. Gaz., ccxiv/1. The Arbitratorship between the two Crowns of Spain and France.
1882. H. Brownson, in O. Brownsons Wks., I. 22. The popes
exercised often an arbitratorship in disputes between sovereign and sovereign.