A headmaster is the man who runs a whole school. He may still teach, but that is not the point of the word: he is the person in charge of the teachers, the students, and the rules.

A headmaster男校長 is the man who runs a whole school是負責管理整間學校的男人。He他 may still teach也許還是會教課，but but that is not the point of the word但那不是這個字的重點：he他 is the person in charge of the teachers, the students, and the rules是負責管老師、學生，和校規的人。

This is mainly a British word, and it feels a bit old and formal now. In American English people say principal instead.

This這個字 is mainly a British word主要是英式用法，and而且 it feels a bit old and formal now現在聽起來有點老派、正式。In American English在美式英文裡 people say principal instead人們改說 principal。

In Britain you will still meet headmaster in older schools, in school stories, and in Harry Potter, but many schools today say head teacher or just the head, because those words do not tell you if the person is a man or a woman.

In Britain在英國，you will still meet headmaster還是會遇到 headmaster 這個字 in older schools, in school stories, and in Harry Potter用在比較老式的學校、學校故事，和《哈利波特》裡，but many schools today say head teacher or just the head不過現在很多學校說 head teacher 或直接說 the head，because those words do not tell you if the person is a man or a woman因為這些說法不會透露這個人是男是女。

You would not use headmaster for the boss of a company, and you would not use it for an ordinary male teacher.

You你 would not use headmaster for the boss of a company不會用 headmaster 來稱呼公司老闆, and而且 you would not use it for an ordinary male teacher也不會用它來稱呼一般的男老師。