牙旗

emperor's or general's banner erected on an ivory-tipped pole at a military camp or headquarters (in ancient times)

tooth / ivory / CL:顆|颗[ke1]

flag / variant of 旗[qi2]

banner / flag / (in Qing times) Manchu (cf. 八旗[Ba1 qi2]) / administrative subdivision in inner Mongolia equivalent to 縣|县[xian4] county / CL:面[mian4]