mouthful
noun uk/ˈmaʊθ.fʊl/ us/ˈmaʊθ.fʊl/
(AMOUNT)
[ C ]满口;一口
an amount of food or drink that fills your mouth, or that you put into your mouth at one time
He only ate a few mouthfuls of meat. 他只吃了几口肉。
(WORD)
[ S ] informal冗长而拗口的词（或词组），难读的词（或词组）
a word or phrase that is difficult to pronounce or that has a lot of syllables
I've always called myself Henny because it's less of a mouthful than Henrietta. 我总是叫自己“亨尼”，因为它不像“亨丽埃塔”那么拗口。
Idiom
give someone a mouthfulidiom mainly UK informal 生气地朝（某人）叫嚷;咒骂（某人）
to shout something angry at someone, usually using offensive language
A taxi driver wound down his window and gave the cyclist a mouthful. 出租车司机摇下车窗，对骑自行车的人破口大骂。