The kanji 襟 generally refers to the "collar" or "neckline" of a garment. It's the part of a shirt, dress, jacket, or other clothing item that surrounds the neck. It can also refer to the part of the body close to the neck.

・On-yomi (音読み): キン (kin) ・Kun-yomi (訓読み): えり (eri)

⚫︎襟付きのシャツ Translation: A shirt with a collar. ⚫︎襟を正す Translation: To straighten one's collar; to compose oneself; to be serious. ⚫︎セーターの襟 Translation: The collar of a sweater.

The kanji 襟 is a phono-semantic compound (形声文字, けいせいもじ). ⚫︎The semantic component is 衣 (clothes, garment), indicating the meaning of the character relates to clothing. ⚫︎The phonetic component is 禁 (kin), which gives the sound. The original meaning of 襟 was related to the edge of the clothing near the neck, which then became its present meaning "collar".