节旄 jiémáo
[tail of yak no tally issued by ancient Chinese rulers as identification] 符节上装饰的牦牛尾
节旄尽落。——《汉书·李广苏建传》
系于竿首的牦牛尾,为天子赐给使者的信物。 《汉书.卷五四.苏建传》:「杖汉节牧羊,卧起操持,节旄尽落。」