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. (西裝) 背心; 馬甲[英國英語] 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；馬甲 返回 waistcoat