public address system - definition in the Learner's Dictionary - Cambridge Dictionaries Online

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English definition of “public address system”

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public address system

noun [C]
 
 
( also UK tannoy)
a system of equipment used in public places that someone speaks into in order to make their voice loud enough to hearAmplifiers, microphones and speakers
(Definition of public address system from the Cambridge Learners Dictionary © Cambridge University Press)
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