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fluff

 
/flʌf/ n [U] (SOFT MASS)

Definition

a soft mass of fibers, feathers, or hair: cotton fluff The cat, a ball of white fluff, darted into the house and started to lick its fur. We’d lie on our backs and blow the dandelion fluff into the neighbor’s yard.
(Definition of fluff n (SOFT MASS) from the Cambridge Academic Content Dictionary © Cambridge University Press)

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