1. A teacher in a British boarding school who is responsible for the welfare and discipline of students living in a particular house or dormitory.
Usage: British English; primarily used in boarding schools

Examples

• The housemaster checked on all the students in his house before lights out.
• She served as housemaster for fifteen years and was beloved by generations of pupils.
• Each housemaster is responsible for enforcing school rules within their dormitory.
• The housemaster organized a house competition to build community spirit.
• Students could approach their housemaster with personal problems or concerns.