齐步 normally refers to the marching step used in military drills and parades, meaning 'in step' or 'uniform steps'. However, the pinyin given here is jì, which is incorrect for this word — the standard pronunciation is qíbù. You can use it as a noun meaning a coordinated marching pace, or as an adverbial phrase describing moving in unison. Be aware that this entry's pinyin may be a data error; in practice you should pronounce it qí bù.