Refers to the edge or opening of a garment around the neck, such as on a dress, shirt, or blouse.
This dress has a wide neckline.
襟ぐりのデザインがおしゃれだ。
The neckline design is stylish.
ネックライン is a loanword from English 'neckline' and is often used in fashion contexts, but 襟ぐり is the native Japanese term.
Standard spelling.
Variant using 衿, which also means collar.
Rarely used kanji form.
Compound of 襟 (eri, 'collar') and ぐり (guri, from 刳り, meaning 'cutting out' or 'hollowing'). The ぐり part refers to the cut-out shape of the neck opening.