schoolmarm
Pronunciation:
/ˈskulˌmɑɹm/noun
Definitions
A woman who is a teacher, especially a teacher in a schoolhouse; may carry the connotation she is severe and/or a spinster.
A person, male or female, who exhibits characteristics attributed to schoolteachers of the old times, such as strict enforcement of arbitrary rules.
A tree with two or more trunks; a forked tree.