Definitions

1. noun

a member of a mounted police force, especially one in the British Army.

“The trooper had to deal with the rioting crowd.”

2. noun

a traveler or pilgrim, especially one on a long or difficult journey.

“The medieval trooper was exhausted after walking for days.”

3. verb

to travel or go on a journey, especially on horseback.

“The knight trooper the mountains to reach the castle.”