BLACK FRIDAY n.
Any Friday on which a public disaster has occurred, as: In England, December 6, 1745, when the news of the landing of the Pretender reached London, or May 11, 1866, when a financial panic commenced. In the United States, September 24, 1869, and September 18, 1873, on which financial panics began.
BLOW n.
calamity; something which produces mental, physical, or financial suffering or loss (esp. when sudden); a buffet. A most poor man, made tame to fortune's blows. Shak. At a blow, suddenly; at one effort; by a single vigorous act. "They lose a province at a blow." Dryden. -- To come to blows, to engage in combat; to fig…