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noise

noun [C or U] (SOUND)
 
 
/nɔɪz/

Definition

A1 a sound or sounds, especially when it is unwanted, unpleasant, or loud: The noise out in the street was deafening. I heard a loud noise and ran to the window. traffic/background noise dangerously high noise levelsSound and its properties
(Definition of noise noun (SOUND) from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)

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