a teacher of the highest academic rank in a college or university, who has been awarded the title Professor in a particular branch of learning; a full professor

a professor of Spanish literature.

any teacher who has the rank of professor, associate professor, or assistant professor.

a teacher.

an instructor in some art or skilled sport

a professor of singing; a professor of boxing.

a person who professes his or her sentiments, beliefs, etc.

noun

pupil , student

noun

assistant , brain * , educator , egghead * , faculty member , fellow , instructor , lecturer , pedagogue , principal , prof , pundit , quant , rocket scientist * , sage , savant , teacher , tutor , don