mentor Definition

mentor
noun

1. A trusted teacher or adviser.

Thesaurus: teacher, instructor, guide, coach, adviser, counselor, tutor, guru, swami.
2. business.
A more senior or experienced colleague appointed to help and advise a junior employee.

Derivative: mentoring
noun

The practice of acting as a mentor or of appointing mentors.

Derivative: mentorship
noun

Etymology: 18c: French, from Greek Mentor, the name of the character in the poems of Homer, who was adviser to Odysseus's son, Telemachus.