黑大豆 hēidàdòu black soybean Definitions Defs Origin Strokes Stroke Words Sentences Sents 黑 hēi adjective black the color of coal or ink; opposite of 白 bái大豆 dàdòu noun soybean The plant or the bean itself; a versatile legume used for food, oil, and fodder. Common varieties include the 黄豆 huángdòu, 黑豆 hēidòu, and 青豆 qīngdòu.