Troop \Troop\, v. i. [imp. & p. p. {Trooped}; p. pr. & vb. n. {Trooping}.] 1. To move in numbers; to come or gather in crowds or troops. "Armies . . . troop to their standard." --Milton. [1913 Webster] 2. To march on; to go forward in haste. [1913 Webster] Nor do I, as an enemy to peace, Troop in the throngs of military men. --Shak. [1913 Webster]