Proof.

Official proof; especially, the proof before a competent
officer or tribunal that an instrument offered, purporting to be the
last will and testament of a person deceased, is indeed his lawful act;
the copy of a will proved, under the seal of the Court of Probate,
delivered to the executors with a certificate of its having been
proved.

The right or jurisdiction of proving wills.

To obtain the official approval of, as of an instrument
purporting to be the last will and testament; as, the executor has
probated the will.