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standby

noun [C] (READY)
 
 
/ˈstænd.baɪ/ (plural standbys)

Definition

something that is always ready for use, especially if a regular one fails: Board games are a good standby to keep the children amused if the weather is bad. There are standby generators but these usually only have to work for a few hours a year during power cuts.Keeping and storing things on standby When a person or a thing is on standby, they are ready to be used if necessary: Hospitals are on standby ready to deal with casualties from the crash.Available and accessiblePresent
(Definition of standby noun (READY) from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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