teach·er 
/ˈti:tʃɚ/ noun
plural teach·ers /ˈti:tʃɚ/ noun [count] : a person or thing that teaches something
▪ Experience is a good teacher. ; especially : a person whose job is to teach students about certain subjects
▪ She is a first-grade teacher. ▪ a language/math/science teacher ▪ a teacher of driver's education — see also schoolteacher, student teacher, substitute teacher
▪ Experience is a good teacher. ; especially : a person whose job is to teach students about certain subjects
▪ She is a first-grade teacher. ▪ a language/math/science teacher ▪ a teacher of driver's education — see also schoolteacher, student teacher, substitute teacher
