りゅうぐうじょう 竜宮城 LinksSentence search for 竜宮城Sentence search for りゅうぐうじょうSentence search for 龍宮城Kanji details for 竜, 宮 and 城Edit in JMdict Noun1. Palace of the Dragon King; palace from the story of Urashima Taro (said to be located at the bottom of the sea)See also 竜宮 りゅうぐうOther forms龍宮城 【りゅうぐうじょう】 Discussions Log in to talk about this word.