胸襟を開く きょうきんをひらく Meanings Expression, Godan verb to be frank; to speak one's mind; to open one's heart; to have a heart-to-heart talk (with someone) See also: 打ち明ける (うちあける). Kanji 胸 chest. Read as キョウ. 襟 collar. Read as キン. 開 open. Read as ひらく. Jinuma: Japanese Dictionary · Word lists