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English definition of “bottleneck”

bottleneck

noun [C]     /ˈbɒt.l̩.nek/ US  /ˈbɑː.t̬l̩-/
a place where a road becomes narrow , or a place where there is often a lot of traffic , causing the traffic to slow down or stop : Roadworks are causing bottlenecks in the city centre .Traffic jams a problem that delays progress : Is there any way of getting round this bureaucratic bottleneck?Preventing and impedingLimiting and restricting
(Definition of bottleneck noun from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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