(a bummer)a thing that is annoying or disappointing 令人烦恼(或失望)的事 the team's relegation is a real bummer. 该队的降级真是令人失望。 ■an unpleasant reaction to a hallucinogenic drug 迷幻药引起的不爽
(N. Amer.)a loafer or vagrant (北美)流浪汉,游手好闲的人
语源
mid 19th cent.: perhaps from German Bummler, from bummeln 'stroll, loaf about'