testament
nounA solemn authentic instrument in writing, by which a person declares his will as to the disposal of his estate and effects after his death. This is otherwise called a will. A testament, to be valid, must be made when the testator is of sound mind, and it must be subscribed, witnessed and published in such manner as the law prescribes. A man in certain cases may make a valid will by words only, and such will is called nuncupative.