Vocabulary What does 竜王 (りゅうおう, ryuuou) mean? 竜王 (りゅうおう, ryuuou) means Dragon King. Quick factsReadingりゅうおうRomajiryuuouPart of speechnoun 竜王りゅうおうryuuouDragon King1noun Dragon King2noun promoted rookAlso written: 龍王Kanji in this word竜dragon王king