1. a male teacher, especially in a school
Usage: somewhat old-fashioned
2. the head teacher or principal of a school
Usage: chiefly British; traditional

Examples

• The old schoolmaster had taught in the village for thirty years.
• Mr. Thompson was a strict but fair schoolmaster.
• The schoolmaster rang the bell to signal the end of recess.
• Parents respected the schoolmaster’s dedication to education.
• The new schoolmaster introduced modern teaching methods.
• Students lined up quietly when the schoolmaster appeared.