纛
トウ, トク, はたぼこ, おにがしら

flag, banner

JLPT0 G13 S0 F5000

As per 毒# (stir) + 縣 as described in 県 (hang suspended) → *flag/pennant/banner* tied to a flagpole at both ends, and which rotates around the pole in the breeze (rotation likened to a repeated stirring motion). Compare 斿 and 旋. Also, a large *flag with the emperor's insignia*.

[Full Kanji Etymology List]