noun
neck ornament; jewelry worn at the neck or collar
Refers to decorative items worn at the neck or collar of Western clothing, such as brooches, necklaces, chokers, or similar accessories.
彼女はドレスに合わせて華やかな襟飾りを選んだ。
She chose a gorgeous neck ornament to match her dress.
この襟飾りは祖母から譲り受けたアンティークのブローチです。
This neck ornament is an antique brooch handed down from my grandmother.
noun
Specifically a necktie. Cross-referenced with ネクタイ, and this usage is less common than the general neck-ornament sense.
See also: ネクタイ
昔の写真を見ると、祖父はいつも襟飾りを締めていた。
Looking at old photos, my grandfather always wore a necktie.
首飾り is a general term for 'necklace' or 'neck ornament', but 襟飾り specifically refers to items worn at the collar or neckline of clothing, often with a more decorative or formal nuance.
Compound of 襟 (eri, 'collar') and 飾り (kazari, 'decoration'). The reading is a straightforward combination of the kun'yomi of each kanji.