JMdict: 1615100

城塞 【じょうさい】

  1. [n] fortress; stronghold; citadel
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Kanji in this word:

Kanji Meanings On Readings Kun Readings
Castle ジョウ, セイ しろ
Close, Shut, Cover, Block, Obstruct ソク, サイ ふさ.ぐ, とりで, み.ちる

Words often seen with this one: (experimental feature)

都市 (36), この (11)