arbitress

Noun

 * 1) A female arbiter.
 * 2) * 1594,, The Tragedy of Cleopatra, ActIII, in Delia and Rosamond augmented by Cleopatra, London: Simon Waterson,
 * O Fearefull frowning NEMESIS,
 * Daughter of IVSTICE, most seuere,
 * That art the worlds great Arbitresse,
 * And Queene of causes raigning heere.