A soldier of private rank in cavalry or armour.
A cavalry horse; charger.
A soldier.
A troopship.
A state trooper.
A mounted policeman.
One who endures adversity or hardship with an attitude of stoicism and persistence.
He was a real trooper about taking care of the kids for the weekend.
To work as a trooper.
To work steadily at an unpleasant job without complaint.