腰こしのくびれ

expression, noun

waist; narrow part of the waist

Refers specifically to the indented or narrow part of the waist, often in the context of body shape or clothing fit.

• 彼かの女じょは腰こしのくびれが美うつくしい。

  She has a beautiful waistline.

• このドレスは腰こしのくびれを強きょう調ちょうするデザインだ。

  This dress is designed to emphasize the waist.