[troop] n [MF trope, troupe company, herd, of Gmc origin; akin to OE thorp, throp village--more at thorp] (1545) 1 a: a group of soldiers b: a cavalry unit corresponding to an infantry company c pl: armed forces, soldiers
2: a collection of people or things: crew 2
3: a flock of mammals or birds
4: the basic organizational unit of Boy Scouts or Girl Scouts under an adult leader
[2]troop vi (1565) 1: to move or gather in crowds
2: to go one's way: walk
3: to spend time together: associate
4: to move in large numbers