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capital (esp. Kyoto, Japan's former capital); seat of government
capital (of music, fashion, etc.); city (e.g. of light)
location of the Imperial Palace
「都」 has another reading with different meanings.
京都はかつて日本の都でした。
Kyoto was once the capital of Japan.
都には文化財が多く残っている。
Many cultural assets remain in the capital.
奈良も昔は都だったことがある。
Nara was also once a capital.