Definition of pro-tutor in English:

pro-tutor

noun

Scottish
Civil Law
rare
  • In Scottish law (now historical): a person who performed the duties of tutor or guardian towards a minor without having been legally appointed to do so. Also (in some civil codes): a person who oversees a tutor or guardian.

Origin

Mid 17th century. From pro- + tutor. Compare classical Latin prōtūtor, French protuteur.