noun
red-light district; pleasure quarters
Refers to traditional entertainment and red-light districts, often associated with geisha, courtesans, and nightlife. Can also appear in compound words like 花柳界 (the world of geisha and courtesans).
江戸時代、花柳の世界は厳しい階級社会だった。
In the Edo period, the world of the pleasure quarters was a strict class society.
彼女は花柳界で名を馳
She was a geisha who made a name for herself in the red-light district.
Compound of 花 (flower) and 柳 (willow), metaphorically referring to the beauty and grace of courtesans and geisha, as well as the transient nature of the pleasure quarters.