1. moving together in a group
Usage: present participle of troop

1. the ceremonial parade of military colors
Usage: military ceremony

Examples

• The students were trooping into the auditorium for assembly.
• Children came trooping down the stairs on Christmas morning.
• The soldiers were trooping past the reviewing stand.
• Fans were trooping out of the stadium after the game.
• The trooping of the colors is held annually on the Queen’s birthday.
• We watched the trooping ceremony from the palace balcony.