neckline

/ˈnɛkˌlaɪn/
noun
  1. The edge or shape of a garment at the neck, especially on a dress, shirt, or top.
    • She chose a dress with a V-shaped neckline for the party.
    • The shirt's high neckline kept her warm in the cold weather.
    • He prefers a simple round neckline on his T-shirts.
Synonyms
What does "neckline" mean? | whatsthatwordmean | whatsthatwordmean