flunk/flʌŋk; flʌŋk/ v [I,T] AmE informal to fail a test or course 【美，非正式】 〔测验或课程〕不及格: I flunked my history exam. 我历史考试不及格。
flunk out AmE informal to be forced to leave a school or college because your work is not good enough 【美，非正式】 〔因学业不好而〕被迫退学: Tim flunked out of Yale. 蒂姆被迫从耶鲁大学退学了。