芥菜籽 jiècàizǐ mustard seed Origin Definitions Defs Strokes Stroke Words Sentences Sents 芥菜 jiècài noun mustard greens an edible plant with many varieties such as leaf mustard, stem mustard, and root mustard; its spicy seeds are ground into 芥末 jièmo籽 zǐ noun seed seed of certain plants such as grain or vegetables