In candlestick charting, a pattern where a black candlestick follows a long white candlestick. It can be an indication of a future bearish trend. Essentially, the large black candle is forming a "dark cloud" over the preceding bullish trend. The dark cloud must have a closing price that is: 1) within the price range of the previous day, but 2) below the mid-point between open and closing prices of the previous day.