Hairline point - Kamigiwaten

…In the inner chapters of the Zhuangzi, it is said that the true man is “their highbrow,” meaning that he has a high and prominent forehead. In English, too, intellectuals are called “highbrows” in a somewhat derogatory way, in contrast to “lowbrows.” However, it is difficult to determine the height of the forehead. The limit of the hair on the frontal head on the midline is called the hairline, and the height of this point is the height of the forehead, so as balding progresses, the forehead becomes increasingly higher. In Ihara Saikaku’s “Amorous Life of a Woman,” a woman dyes the edge of her forehead with ink from an inkstone when applying makeup, and women in the Edo period also paid attention to the appearance of their forehead. …

*Some of the terminology explanations that refer to "hair edge point" are listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

…《荘子》内篇に真人は〈其顙頯〉，つまりひたいが高く秀でているとあり，英語でも知識人をやや軽蔑的にハイブラウhighbrowと言ってローブラウlowbrowと対比するが，額の高さを決めるのは難しい。正中線上の前頭部頭髪の限界を髪際（かみぎわ）点と言い，この点の高さが額の高さだから，はげていけば額はどんどん高くなってしまう。　井原西鶴《好色一代女》で，女が化粧の際，硯（すずり）の墨で額の際を染めているように，江戸時代の女性は額の形容にも心を配った。…

※「髪際点」について言及している用語解説の一部を掲載しています。

出典｜株式会社平凡社世界大百科事典 第２版について | 情報