1. plural of mistress: female teachers or heads of households
Usage: formal or traditional contexts
2. plural of mistress: women who have control or authority over something
Usage: formal

Examples

• The school employed several experienced mistresses to teach different subjects.
• The mistresses of the estate managed all household affairs.
• These women were mistresses of their own destinies.
• The headmistresses met to discuss curriculum changes.
• She was one of the most respected mistresses at the academy.
• The mistresses of the manor supervised the staff efficiently.