2American Englishsomeone who teaches in an American college or university and who has a rank belowassistant professor:
a social studies instructor
➔ see usage noteteacherWORD CHOICE: WORD CHOICE: teacher, professor, lecturer, tutor, instructor, coach, trainerA teacherusually works in a school• Do the children like their new teacher? A professor is a teacher of the highest rank in a British university, and is a general term for a teacher in an American college.Someone who teaches in a British university and who is not a professor is called a lecturer.A tutorgives lessons to just one student or a small group of students, especially privately in their home or a student's home• a private tutorAn instructor is someone who helps people learn a sport or practical skill, such as driving, skiing, or swimming• a riding instructorA coachis someone who helps a person or a team to improve in a sport• the school swimming coachA trainer is someone who teaches people the skills they need for a job• a teacher trainer. It is also someone who teaches skills to animals• a racehorse trainer ➔ See alsoteacher
Definition from the Longman Dictionary of Contemporary English Advanced Learner's Dictionary.