Matron

1. A wife or a widow, especially, one who has borne children; a woman of staid or motherly manners.
2. A housekeeper; esp., a woman who manages the domestic economy of a public instution; a head nurse in a hospital; as, the matron of a school or hospital.
Jury of matrons (Law),
a jury of experienced women called to determine the question of pregnancy when set up in bar of execution, and for other cognate purposes.