pile up
Britishverb
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to gather or be gathered in a pile; accumulate
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informal to crash or cause to crash
noun
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Accumulate, as in The leaves piled up in the yard , or He piled up a huge fortune . In this idiom pile means “form a heap or mass of something.” [Mid-1800s]
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Be involved in a crash, as in When the police arrived, at least four cars had piled up . [Late 1800s]
Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
In vast warehouses at the Kamoa copper mine in the southeastern Democratic Republic of Congo, mountains of reddish rocks pile up as the machines grind away day and night.
From Barron's • Jun. 26, 2026
The losses have continued to pile up this term: Once again, the 5th Circuit looks poised to have the highest reversal rate of any appeals court.
From Slate • Jun. 12, 2026
The vulnerability was real, but the larger lesson was mostly missed: organizations let technical debt pile up until a deadline turns it into a crisis.
From MarketWatch • May 27, 2026
There’s a reason black beans tend to pile up in the pantry.
From Salon • May 5, 2026
Is that why they pile up like that?
From "Made You Up" by Francesca Zappia
Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
