schoolmarm
noun [ C ] uk/ˈskuːl.mɑːm/ us/ˈskuːl.mɑːrm/
mainly US old-fashioned（中小学）女教师
a female school teacher
Compare: headmaster schoolmistress schoolmaster schoolteacherteacher
See also: mistress (WOMAN IN CONTROL)
disapproving古板严厉的女人
a formal and severe woman, especially a school teacher, who likes to control other people and is easily shocked