WAISTCOAT Meaning of WAISTCOAT in English waistcoat BrE AmE ˈweɪs kəʊt ˈweɪst-; ˈwesk ət, -ɪt AmE \ ˈwesk ət ˈweɪs t koʊt ▷ waistcoat|s s Longman Pronunciation English Dictionary. Английский словарь произношений Longman. 2012