Governess

(n.) A female governor; a woman invested with authority to control and direct; especially, one entrusted with the care and instruction of children, -- usually in their homes.

Thesaurus Entries

abbess, chaperon, chatelaine, dame, dowager, duenna, educatress, first lady, goodwife, great lady, homemaker, housewife, instructress, madam, matriarch, matron, mistress, mother superior, schooldame, schoolmarm, schoolmistress, tutoress