noun
three entertainment district enterprises
Historical term referring to the three main types of businesses in a traditional Japanese entertainment district: eating houses, geisha houses, and assignation houses. Rare in modern usage outside historical or cultural contexts.
江戸時代の遊郭では、三業と呼ばれる飲食店、芸者屋、待合が営まれていた。
In the pleasure quarters of the Edo period, the three enterprises known as 三業—eating houses, geisha houses, and assignation houses—were operated.