- n. A Friday falling on the 13th day of the month (and therefore doubly ill-omened).
- n. Any Friday actually darkened by catastrophe.
- n. The anniversary of a number of catastrophic or unfortunate historical events originally occurring on a Friday.
- n. Good Friday
- n. US, business, retailing The day after Thanksgiving Day, generally regarded as the first day of the Christmas season, and the busiest shopping day of the year. (Although this usage may also very possibly originate in Etymology 1)
- Because retailers typically post profits ('in the black') rather than losses ('in the red'). (Wiktionary)
“Buying coins at the top of a speculative blowoff like April 18, 1980, the coin market’s infamous Black Friday would cause you to have to wait for the market to recover in order to start reaping profits.”
Looking for tweets for Black Friday.