硝烟滚滚 xiāoyāngǔngǔn smoke billows from a battle Origin Definitions Defs Strokes Stroke Words Sentences Sents 硝烟 硝煙 xiāoyān gunpowder smoke the smoke resulting from an explosion of gunpowder or ammunition滚 滾 gǔn reduplication to roll to move by turning over and over; to rotate or revolve while moving; to make something roll; to tumble