What is the meaning of Trooper?
A soldier of private rank in cavalry or armor.
A cavalry horse; a charger.
A soldier.
A troopship.
Ellipsis of state trooper.
A mounted policeman.
Misspelling of trouper (“one who stoically endures adversity”).
To work as a trooper.
To work steadily at an unpleasant job without complaint.
Source: wiktionary.org