Neckline (noun)

1. The line around the neck of a garment, especially a dress or a shirt, that defines the shape or the opening of the neck.
2. The general shape of the neckline of a garment.

Origin:

Derived from the word 'neck' meaning the part of the body connecting the head and the torso.

Examples:

1. The neckline of the dress was cut low to show off her elegant neck and shoulders.
2. The neckline of the shirt was a simple round neck, which was easy to wear and comfortable.
3. The neckline of the blouse was a plunging V-neck, which made it more suitable for evening wear.
4. The neckline of the jacket was a stand-up collar, which gave the jacket a smart and formal look.
5. The neckline of the sweater was a boat neck, which was a classic and versatile style that never went out of fashion.