Definition of professor:
- sage (part of speech: noun)
teacher (part of speech: noun)
- professor emeritus,
- faculty member,
- master docent,
- professor emerita,
- teaching fellow
- scholar (part of speech: noun)
- "Ethel Morton at Chautauqua", Mabell S. C. Smith.
- "The Young Musician or, Fighting His Way", Horatio Alger.
- "Further Foolishness", Stephen Leacock.