teacher
noun
ˈtiːtʃə(r) 
ˈtiːtʃər a person whose job is teaching, especially in a school
a history/science, etc. teacherprimary school teachersThere is a growing need for qualified teachers of Business English.
Usage note: Teach and teachersVerbsteachJohn teaches French at the local school. ◇ She taught me how to change a tyre.educateOur priority is to educate people about the dangers of drugs.instructMembers of staff should be instructed in the use of fire equipment.trainShe’s a trained midwife. ◇ He’s training the British Olympic swimming team.coachHe’s the best football player I’ve ever coached. ◇ She coaches some of the local children in maths. (British English)tutorShe tutors some of the local children in math. (North American English)Nounsteacherschool/college teachersinstructora swimming/science instructortrainera horse trainer ◇ Do you have a personal trainer?coacha football coachtutortutors working with migrant children