Black Monday
noun
1
- Monday 19 October 1987, when massive falls in the value of stocks on Wall Street triggered similar falls in markets around the world黑色星期一（指1987年10月19日星期一, 当时华尔街股市行情大规模下跌并引发世界各地出现类似情况）。
2
- archaic Easter Monday (probably so called because Mondays in general were held to be unlucky)〈古〉复活节星期一。