mouthful/ˋmaUθ͵fUl; ˈmaʊθfʊl/n 1 [C] an amount of food or drink that you put into your mouth at one time〔食物﹑饮料〕一口之量: He took a big mouthful of cake. 他咬了一大口蛋糕。2 a mouthfulinformal a long word or phrase that is difficult to say【非正式】又长又拗口的词[短语]: Her real name is quite a mouthful, so we just call her Dee. 她的原名相当拗口﹐所以我们只叫她迪伊。