1. The day before Black Friday where retailers start their sales early so they can get a bit more money.
2. The day of Thursday, October 24, 1929, when stock prices began to drop at an increasing rate. It was the first day of the Stock Market Crash of 1929 that marked the beginning of the Great Depression.
1. I saw a commercial for Black Thursday sales at Macy's earlier, although they still called them Black Friday sales.
2. Black Thursday saw stock prices fall dramatically, foreshadowing the panic that would ensue just five days later on Black Tuesday.