A judicial certificate saying that a will is genuine and conferring on the executors the power to administer the estate WordNet 3.0 & Open English WordNet

In common law jurisdictions, probate is the judicial process whereby a will is "proved" in a court of law and accepted as a valid public document that is the true last testament of the deceased, or whereby the estate is settled according to the laws of intestacy in the state of residence of the deceased at time of death in the absence of a legal will. Wikipedia

Distribution of an inherited estate Wikidata

The legal process of verifying the legality of a will. Wiktionary

Legal process of verifying the legality of a will. Wiktionary (translation)