rush hour

noun

: a period of the day when the demands especially of traffic or business are at a peak

Examples of rush hour in a Sentence

We got caught in the morning rush hour.
Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Those changes don't alter rush hour service, but many midday train schedules have been altered. Jesse Zanger, CBS News, 12 May 2026 Driving the span takes about 45 minutes, and over an hour during peak rush hour. R. Daniel Foster, Forbes.com, 9 May 2026 There are bus lanes only in play during rush hours, and there are spots where buses and bikes have their own lanes next to one another. Jim Radcliffe, Oc Register, 8 May 2026 During rush hours, the drive to downtown Miami may take you nearly an hour and a half. Catherine Odom may 8, Miami Herald, 8 May 2026 See All Example Sentences for rush hour

Word History

First Known Use

1878, in the meaning defined above

Time Traveler
The first known use of rush hour was in 1878

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Cite this Entry

“Rush hour.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/rush%20hour. Accessed 13 May. 2026.

Kids Definition

rush hour

noun
: a period of the day when traffic is very heavy or business is very brisk
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