What does arbitrate mean?
The definition of arbitrate
Ar”bi*trate, v. t.
[imp. & p. p. Arbitrated; p. pr. & vb. n.Arbitrating.]
Etym: [L. arbitratus, p. p. of arbitrari to be a hearer or beholder of something, to make a decision, to give judgment, fr. arbiter. See Arbiter.]

1 To hear and decide, as arbitrators; as, to choose to arbitrate a disputed case.
2 To decide, or determine generally. South. There shall your swords and lances arbitrate The swelling difference of your settled hate. Shak.

Ar”bi*trate, v. i.
1 To decide; to determine. Shak.
2 To act as arbitrator or judge; as, to arbitrate upon several reports;; to arbitrate in disputes among heighbors; to arbitrate between parties to a suit.