Historical term referring to an intellectual woman, often associated with the early 20th-century Japanese feminist magazine 'Seitō'. The word itself is a direct translation of the English 'bluestocking'.
Seitō was a literary magazine published by women in the Meiji era.
She is known as one of the bluestockings of that time.
A calque from English 'bluestocking', combining 青 (blue) and 鞜 (stocking). The kanji 鞜 is rare and primarily used in this historical term.