professional name used by hostesses and geisha
A pseudonym adopted by women working in the nightlife and entertainment industry, especially hostesses and geisha. The term alludes to the chapter names from The Tale of Genji that were historically used as such names.
She goes by the professional name 'Murasaki'.
From 源氏 (Genji, referring to The Tale of Genji) + 名 (name). Historically, courtesans and entertainers adopted names from the chapters of The Tale of Genji.