noun
square neck; square neckline
Refers to a square-shaped neckline on clothing, such as tops and dresses. Common in fashion contexts.
彼女はスクエアネックのワンピースを着ていた。
She was wearing a square-neck dress.
今年のトレンドはスクエアネックのトップスだ。
This year's trend is square-neck tops.