1. Fine, dry particles of earth or other matter, so comminuted that they may be raised and wafted by the wind; that which is crumbled too minute portions; fine powder; as, clouds of dust; bone dust. Dust thou art, and unto dust shalt thou return. (gen. Iii. 19) Stop! for thy tread is on an empire's dust. (Byron)
7. Gold dust; hence: Coined money; cash. Down with the dust, deposit the cash; pay down the money. My lord, quoth the king, presently deposit your hundred pounds in gold, or else no going hence all the days of your life. . . . The Abbot down with his dust, and glad he escaped so, returned to Reading. .
(Science: botany) dust brand, a fungous plant (ustilago Carbo); called also smut. Gold dust, fine particles of gold, such as are obtained in placer minin 73f g; often used as money, being transferred by weight. In dust and ashes. See ashes. To bite the dust. See bite, to raise, or kick up, dust, to make a commotion. To throw dust in one's eyes, to mislead; to deceive.
Origin: as. Dust; cf. LG. Dust, D. Duist meal dust, od. Doest, donst, and g. Dunst vapor, OHG. Tunist, dunist, a blowing, wind, Icel. Dust dust, dan. Dyst mill dust; perh. Akin to L. Fumus smoke, E. Fume.