Black Thursdayn.
/ˌblak ˈθəːzdeɪ/, /ˌblak ˈθəːzdi/, U.S. /ˈblæk ˈθərzˌdeɪ/, /ˈblæk ˈθərzdi/ U.S. Stock Market.
(A name given to) Thursday 24 October, 1929, the first day of a period of panic selling on the New York Stock Exchange that precipitated the Wall Street Crash.
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1929 Chicago Tribune 26 Oct. 25/2 Berlin financial circles yesterday declared that ‘black Thursday’ on the New York Stock exchange had brought forth a sigh of relief throughout Europe, which suffered from the ‘exaggerated speculation’ that had been going on in Wall street.
1929 Economist 2 Nov. 805/2 Even before Wall Street's ‘Black Thursday’, events showed that the new Bank rate was achieving its objects.
1986 E. E. Scharff Worldly Power ii. 31 On..Black Thursday, stocks plummeted, as an unprecedented 1,676,000 shares changed hands in the first half hour of trading. By 11 a.m. the market was reeling with $9 million in paper losses.
2005 Jrnl. Contemp. Hist. 40 774 Hoover's statement on the Friday after ‘Black Thursday’..inspired much subsequent ridicule.
This is a new entry (OED Third Edition, September 2011; most recently modified version published online December 2021).
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n.1929