1. a person who instructs others in military drill or physical exercises, especially a sergeant or instructor who trains soldiers or recruits
Usage: commonly used in military contexts
2. a person who teaches or supervises marching, formations, or coordinated movements in a non-military setting, such as in schools or performance groups
Usage: used in educational and performance contexts

Examples

• The drillmaster barked orders at the new recruits during morning training.
• Our high school's drillmaster choreographed the marching band's halftime show.
• The drillmaster demanded precision and discipline from every soldier on the parade ground.
• She worked as a drillmaster at the military academy for over twenty years.
• The drillmaster taught the cadets proper formation and marching techniques.
• At summer camp, the drillmaster led the children through synchronized exercises.