The Collaborative International Dictionary
Preceptress
Preceptress \Pre*cep"tress\, n. A woman who is the principal of a school; a female teacher.
Wiktionary
preceptress
n. (context obsolete English) A female preceptor, or provider of moral instruction
Usage examples of "preceptress".
The child glanced towards her mother, who was standing by a window, and I saw who was her preceptress.