にしまる 西の丸 LinksSentence search for 西の丸Sentence search for にしのまるKanji details for 西 and 丸Edit in JMdict Noun1. western citadel; west wing of the Edo castle (where the heir apparent or retired shogun would live)See also 江戸城Place2. Nishinomaru Discussions Log in to talk about this word.