かいきん 開襟 LinksSentence search for 開襟Sentence search for かいきんSentence search for 開衿Kanji details for 開 and 襟Edit in JMdict Noun1. unbuttoning a collarNoun2. opening up (one's heart)Noun3. open-necked shirtAbbreviation, See also 開襟シャツOther forms開衿 【かいきん】 Discussions Log in to talk about this word.