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Related to dust off: leave in the dust
1. Fine, dry particles of matter.
2. A cloud of fine, dry particles.
3. Particles of matter regarded as the result of disintegration: fabric that had fallen to dust over the centuries.
a. Earth, especially when regarded as the substance of the grave: "ashes to ashes, dust to dust" (Book of Common Prayer).
b. The surface of the ground.
5. A debased or despised condition.
6. Something of no worth.
7. Chiefly British Rubbish readied for disposal.
8. Confusion; agitation; commotion: won't go back in until the dust settles.
v. dust·ed, dust·ing, dusts
1. To remove dust from by wiping, brushing, or beating: dust the furniture.
2. To sprinkle with a powdery substance: dusted the cookies with sugar; dust crops with fertilizer.
3. To apply or strew in fine particles: dusted talcum powder on my feet.
4. Baseball To deliver a pitch so close to (the batter) as to make the batter back away.
1. To clean by removing dust.
2. To cover itself with dry soil or other particulate matter. Used of a bird.
To restore to use: dusted off last year's winter coat.
in the dust
Far behind, as in a race or competition: a marketing strategy that left our competitors in the dust.
make the dust fly
To go about a task with great energy and speed.
[Middle English, from Old English dūst.]