noun a company of stageplayers; a troupe.
2. troop ·add. ·noun ·see boy scout, above.
3. troop ·vi to march on; to go forward in haste.
4. troop ·noun a particular roll of the drum; a quick march.
5. troop ·noun a collection of people; a company; a number; a multitude.
6. troop ·vi to move in numbers; to come or gather in crowds or troops.
7. troop ·noun soldiers, collectively; an army;
now generally used in the plural.
8. troop ·noun specifically, a small body of cavalry, light horse, or dragoons, consisting usually of about sixty men, commanded by a captain; the unit of formation of cavalry, corresponding to the company in infantry. formerly, also, a company of horse artillery; a battery.