mouth·ful/`maθˏfl; 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 2 a mouthfulinformal a long word or phrase that is difficult to say 【非正式】 又长又拗口的词［词组］: Her real name is quite a mouthful, so we just call her Dee. 她的真名真是又长又拗口，所以我们只叫她迪伊。