noun a solemn, authentic instrument in writing, by which a person declares his will as to disposal of his estate and effects after his death.
2. testament ·noun one of the two distinct revelations of god's purposes toward man; a covenant; also, one of the two general divisions of the canonical books of the sacred scriptures, in which the covenants are respectively revealed; as, the old testament; the new testament;
often limited, in colloquial language, to the latter.