Definition of headmaster noun from the Oxford Advanced Learner's Dictionary

 

headmaster

 noun
noun
BrE BrE//ˌhedˈmɑːstə(r)//
 
; NAmE NAmE//ˌhedˈmæstər//
 
(usually North American English principal) Teaching and learning, School life
 
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a male teacher who is in charge of a school, especially a private school see also head teacher See related entries: Teaching and learning, School lifeExtra examples He is a retired headmaster, living in Edinburgh. He went on to become headmaster of a school in Bath. There was a notice board on the wall outside the headmaster’s study.
See the Oxford Advanced American Dictionary entry: headmaster