from
The Collaborative International Dictionary of English v.0.48
Arbitrate \Ar"bi*trate\, v. t. [imp. & p. p. {Arbitrated}; p.
pr. & vb. n. {Arbitrating}.] [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.
[1913 Webster]
2. To decide, or determine generally. --South.
[1913 Webster]
There shall your swords and lances arbitrate
The swelling difference of your settled hate.
--Shak.
[1913 Webster]