1. the measurement around a person’s waist
2. the narrowest part of the human body between the ribs and hips
3. the seam or edge of a garment at the waist

Examples

• She measured her waistline before starting the diet.
• The dress has a fitted waistline that flatters her figure.
• His waistline has expanded since he stopped exercising.
• The high waistline of the skirt is very fashionable.
• The tailor adjusted the waistline to fit perfectly.
• Regular exercise can help reduce your waistline.
• The belt sits right at the natural waistline.