綿火藥 miánhuǒyào pyroxylin Origin Definitions Defs Strokes Stroke Words Sentences Sents 绵 綿 mián noun silk floss (bound form) silk floss; something soft or downy like silk floss火药 火藥 huǒyào gunpowder A chemical mixture that burns or explodes rapidly, releasing gas and heat; one of the Four Great Inventions of ancient China.