fluKK [ˋflu] /ˈflu/名詞1流感、流行性感冒常與 the 連用Half the office is off work with the flu this week.這禮拜辦公室有一半的人得流感沒來上班。2腸胃型感冒、病毒性腸胃炎口語,多作 stomach fluShe caught a stomach flu and threw up all night.她得了腸胃型感冒,整晚都在嘔吐。