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English definition of “fluff”

fluff

noun [U] uk   /flʌf/ us  

fluff noun [U] (SOFT MASS)

small, loose pieces of wool or other soft material, or the down (= soft new hairs) on a young animal: He brushed the fluff off his coat.

fluff noun [U] (ENTERTAINMENT)

US entertainment that is not serious or valuable

fluff

verb [T] uk   /flʌf/ (US also flub) informal us  
to fail something or do it badly: I fluffed my driving test three times before I finally got it. All the time I was acting with him, I never once heard him fluff his lines (= say something wrong when acting).
Phrasal verbs
(Definition of fluff from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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