开襟 kāijīn [a kind of Chinese-style garment which buttons down the front or on the right]∶中式上衣、袍子等的一种式样,前面的部分分开,纽扣在胸前的叫对开襟,在右侧的叫右开襟
[with one's coat unbuttoned]∶[乘凉]敞开衣襟
