a person employed to instruct another in some branch or branches of learning, esp. a private instructor.

a teacher of academic rank lower than instructor in some American universities and colleges.

a teacher without institutional connection who assists students in preparing for examinations.

(esp. at Oxford and Cambridge) a university officer, usually a fellow, responsible for teaching and supervising a number of undergraduates.

the guardian of a boy or girl below the age of puberty or majority.

to act as a tutor to; teach or instruct, esp. privately.

to have the guardianship, instruction, or care of.

to instruct underhandedly; coach

to tutor a witness before he testifies.

Archaic .

to train, school, or discipline.

to admonish or reprove.

to act as a tutor or private instructor.

to study privately with a tutor.