urbane and good-looking woman; sophisticated and attractive woman
Describes a woman who has lost her rustic or naive exterior, revealing refined charm and attractiveness. Often used in a complimentary way, implying worldly experience and polish.
See also: 渋皮がむける
She is a sophisticated woman who carries herself with confidence in any situation.
That actress gives off the vibe of a polished and attractive woman.
The base expression meaning 'to lose one's rustic or naive exterior'; 渋皮のむけた女 is a noun phrase derived from it, specifically describing a woman who has undergone this transformation.
Standard kanji spelling using むけた in kana.
Variant using the kanji 剥 for むける; less common but still seen.
From 渋皮, the coarse inner skin of a chestnut, and むける, “come off, peel away.” The image of this rough skin having come away figuratively describes a woman whose appearance and manners have become polished and attractive.