noun
homosexual; gay man
Wasei-eigo from English 'blue boy'. Dated and somewhat euphemistic; modern Japanese typically uses 同性愛者 or ゲイ.
wasei-eigo (Japanese-coined English), from blue boy
昔の雑誌では「ブルーボーイ」という言葉が使われていた。
In old magazines, the word 'blue boy' was used.
Variant with interpunct; less common but still seen.
Wasei-eigo from English 'blue boy'. The exact origin is uncertain, but it likely emerged in mid-20th-century Japanese as a euphemism for a homosexual man.