Materfamilias means: Materfamilias is the female head of the household; also known as the mother figure. Latin for “mother of the household”, materfamilias means. This is a compound of mater mother and familias. It comes from familia household or famulus slave, but it can also be used to refer to a servant. Paterfamilias is its masculine equivalent.
(in Medical Dictionary)

What else does Materfamilias mean?

One woman that is head of the household or mother to a family.
(in Merlin Dictionary)