開襟 かいきん Also written 開衿 Meanings Noun unbuttoning a collar opening up (one's heart) open-necked shirt See also: 開襟シャツ (かいきんシャツ). Kanji 開 open. Read as カイ. 襟 collar. Read as キン. Words containing 開襟 開襟シャツ (かいきんシャツ) open-necked shirt Jinuma: Japanese Dictionary · Word lists