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English definition of “rush hour”

rush hour

noun [C usually singular] uk   us  
B2 the busy part of the day when towns and cities are crowded, either in the morning when people are travelling to work, or in the evening when people are travelling home: rush hour trafficTraffic jamsDays and times of dayWorking hours and periods of workWork, working and the workplace
(Definition of rush hour from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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