waistline

The diet claims it will reduce your waistline in just four weeks.这种食谱声称仅四周就能让你瘦腰。

I'm watching my waistline. [=I'm trying not to eat too much so that I don't gain weight]我正在注意我的腰围。

The dress has a small waistline and a full skirt.这条连衣裙腰窄下摆宽。