1SET someone who trains people or animals for sport or work [↪ coach]:
a racehorse trainer ➔ see usage note teacher
a racehorse trainer2 British EnglishDC a type of strong shoe that you wear for sport [= tennis shoe American English]
WORD CHOICE: 
teacher, professor, lecturer, tutor, instructor, coach, trainerA teacher usually 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 tutor gives 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 coach is 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 also teacher

teacher, professor, lecturer, tutor, instructor, coach, trainerA teacher usually 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 tutor gives 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 coach is 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 also teacher
