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English definition of “standby”

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standby

noun [C]
 
 
/ˈstændbaɪ/ ( plural standbys)
someone or something extra that is ready to be used if needed: We kept our old TV set as a standby in case the new one broke.Keeping and storing things
be on standby to be ready to do something or to be used if needed: Police were on standby in case there was any trouble after the game.Keeping and storing things
(Definition of standby from the Cambridge Learners Dictionary © Cambridge University Press)
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