Engulfing is a two candle pattern that is frequently seen on the charts. For the bullish case, the first candle must be a black one which is followed by a white candle that ‘engulfs’ the previous candle. In other words, the body of the white candle must be larger than the black candle. For the bearish case, the first candle would be white and the second candle would be black.
To note, the entire range of the first candle, including both the body and the shadows, must be covered by the body of the second candle for a proper pattern.