someone who makes sure that things are done according to a dead person's will (= their legallyrecordedwishes about what should happen to their money, property, etc.):
Examples:
As executor, I tried to close my late mother's bankaccounts.
someone who makes sure that things are done according to a dead person's will (= a document in which someone says who should have their money or property after they die):
Examples:
She diedrecently and I am an executor of her will.