1. Filled, covered, or sprinkled with dust; clouded with dust; as, a dusty table; also, reducing to dust. And all our yesterdays have lighted fools The way to dusty death. (Shak)
2. Like dust; of the colour of dust; as a dusty white.
(Science: botany) dusty miller, a plant (Cineraria maritima); so called because of the ashy-white coating of its leaves.
Origin: as. Dystig. See dust.