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English definition of “fly”

fly

noun [C]     /flaɪ/
INSECT B1 a small insect with two wings : There was a fly buzzing around in the kitchen .Insect names
TROUSERS (also UK flies [plural]) the part where trousers open and close at the front : a button / zip fly Parts of clothes
(Definition of fly noun from the Cambridge Learner's Dictionary © Cambridge University Press)

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