1.摆动,摇动
2.(用手旗,灯光等)打(信号,暗号)
1.发信号;旗语信号
1.the method of communicating by waving an arm or a flag
2.a message communicated by the moving of arms or flags
1.to wave or swing from side to side in an arc around a fixed point, or make something such as a flag move in this way
2.to send a message by waving something such as an arm or a flag