Noun
a line around the body at the waist; its measurement
the narrowest part of a garment, usually at the waist, but may be above or below depending on the dictates of fashion or the whim of the designer
(slang) person having a large waistline
The horizontal line just below the windows of a car or other vehicle.
Source: en.wiktionary.orgGuys understand a waistline. They understand a silhouette. L'Wren Scott
Riding a bicycle is about getting back to basics. It's good for the waistline and it's good for the wallet, is what I'm saying. Phil Keoghan
Your waistline may be spreading but you can't blame it on the expansion of the universe. Richard H. Price
I'm well aware of the health dangers of an expanding waistline and belly fat: diabetes, heart disease, stroke, even cancer. Denise Austin
So if you serve a whole chicken to your family like grandma did, you may be serving them 10 times as much fat than the days of yesteryear. That's a whole lotta fat, and big trouble for the waistline. Kathy Freston
Calypso tents, also originating in Trinidad, feature cadres of musicians who perform biting social commentaries, political exposés or rousing exhortations to "wuk dah waistline" and "roll dat bumper". Source: Internet