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English definition of “Black Monday”

Black Monday

noun
 
 
ECONOMICS, FINANCE, STOCK MARKET
Monday, October 28, 1929, when the price of shares on the New York Stock Exchange lost a lot of their value, causing very serious economic problems in the US and Europe, and leading to the Great Depression of the 1930s : Black Monday kicked off the Depression. → Compare Black Thursday, Black Tuesday, Black Wednesday, Wall Street Crash
Monday, October 19, 1987, when the price of shares on the New York Stock Exchange lost 508 points from their value, causing problems in stock markets around the world: It launched its first unit trusts at an inauspicious time - July 1987, just three months before Black Monday.
Monday, October 27, 1997, when the price of shares on the New York Stock Exchange lost 554 points from their value, causing problems in stock markets around the world
(Definition of Black Monday from the Cambridge Business English Dictionary © Cambridge University Press)
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