The hiragana syllable 𛄟 (wu). Its equivalent in katakana is 𛄢 (wu).

regicide

(obsolete) the emperor's residence, the imperial palace / (obsolete) the capital, especially within an empire

(historical) Hanseong (Seoul during the Joseon dynasty)

a place name, such as that of Uki City in Kumamoto Prefecture / a surname

siege

to besiege / to attack a city

Imperial palace

to defend in a fort; to garrison / to stay at home, or in one's own room for a period of time

castle in ruins