1. a soldier in a cavalry or armored unit
Usage: military
2. a state police officer
3. a person who shows courage and perseverance in difficult situations
Usage: informal

Examples

• The cavalry trooper mounted his horse at dawn.
• A state trooper pulled over the speeding car on the highway.
• She’s been a real trooper through all the medical treatments.
• The trooper’s unit was deployed to the front lines.
• Call the state police if you need a trooper for assistance.
• He’s such a trooper for working through his illness.
• The armored troopers advanced across the battlefield.