灰飞烟灭 huīfēiyānmiè to vanish into thin air Origin Definitions Defs Strokes Stroke Words Sentences Sents 灰 huī nounproper noun ash the powder left after something has burned, such as coal or wood飞 飛 fēi to float to float or drift in the air, such as snow or petals烟 煙 yān noun smoke gas and visible particles emitted by a burning substance灭 滅 miè verb to disappear to vanish or cease to be; to die out