Definitions for "Black Friday"
In finance, Black Friday commonly refers the September 24th 1869 financial crisis...
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.
a retail sales term used to describe the Friday after Thanksgiving... traditionally a big selling day for the retail world... originated as a description of the day in the year when a retailer begins to profit or "be in the black".
Keywords:  monday, chip, blue
Black Monday Blue Chip