竜りゅう星せいりゅうせいMeanings1nounRyūsei (professional go title)go (game)A professional go title in Japan. The name is also used for the Ryūsei tournament.竜りゅう星せい戦せんは囲い碁ごの棋き戦せんの一ひとつです。The Ryūsei tournament is one of the go competitions.