Maг®tresse «FREE × SECRETS»

: It can denote a woman who owns an animal (e.g., la maîtresse d'un chien ) or a female head of a household ( maîtresse de maison ). Usage as an Adjective

: In France, it is the standard term used by elementary and kindergarten students to address their female teacher. MaГ®tresse

While mostly a noun, maîtresse can function as an meaning "main," "central," or "principal" in specific idiomatic expressions: What does maîtresse mean in French? - WordHippo : It can denote a woman who owns an animal (e