柯林斯词典waistcoat /ˈweɪsˌkəʊt, ˈwɛskət/ (waistcoats) 1. N-COUNT A waistcoat is a sleeveless piece of clothing with buttons that people usually wear over a shirt. (西装) 背心; 马甲[英国英语] 返回 waistcoat剑桥词典a piece of clothing that covers the upper body but not the arms and usually has buttons down the front , worn over a shirt 西服背心；马甲 返回 waistcoat