(obsolete) A female preceptor, or provider of moral instruction
1852, James Fenimore Cooper, Precaution Chapter , Her preceptress had never found it necessary to repeat an admonition of any kind, since her arrival at years to discriminate between the right and the wrong.
1889, Charles Brockden Brown, Arthur Mervyn Chapter , She was my sister, my preceptress and friend; but she died--her end was violent, untimely, and criminal!
1896, Mary E. Wilkins Freeman, Madelon Chapter , She had married late in life, having been previously a preceptress in a young ladies' school.