1. soldiers in a cavalry or armored unit
Usage: military
2. state police officers
Usage: American English
3. members of a troop of scouts or similar organization

Examples

• The troopers mounted their horses at dawn.
• State troopers patrol the highways looking for speeding drivers.
• The cavalry troopers advanced across the battlefield.
• Two troopers pulled over the reckless driver.
• The Boy Scout troop had twelve troopers this year.
• The troopers were well-trained and disciplined soldiers.