花か柳りゅうTop 25000MeaningsNoun1. red-light districtKanji used花flower柳willow treePitch accentかりゅうUsed in vocabulary花か柳りゅう界かいred-light district; pleasure quarters; world of the geisha; demimondeNoun花か柳りゅう病びょうsexually transmitted disease; social diseaseNoun花か柳りゅう街がいred-light districtNoun