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dust

 
/dʌst/ n [U]

Definition

dry dirt in the form of powder that covers surfaces inside a building, or very small dry pieces of earth, sand, or other substances: The furniture was covered with dust. dusty
 
/ˈdʌs·ti/ adj
Piles of dusty books lay on the floor.
(Definition of dust n from the Cambridge Academic Content Dictionary © Cambridge University Press)

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