pileup
Americannoun
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a massive collision of several or many moving vehicles.
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an accumulation, as of work, chores, or bills.
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a rough or disorderly falling of people upon one another, as in a football game.
Etymology
Origin of pileup
First recorded in 1825–35; noun use of verb phrase pile up
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.
Blake Scholl, chief executive of the Denver-based aviation company Boom Supersonic, moved to Colorado a decade ago, inspired by its thriving business climate, but said the pileup of regulations has delayed his construction projects.
From The Wall Street Journal ● May 4, 2026
The California Highway Patrol responded to the vehicle pileup at 7:34 p.m.
From Los Angeles Times ● Mar. 31, 2026
In my family, birthdays arrive in a cheerful pileup.
From Salon ● Feb. 3, 2026
The advantages are obvious: The method could be used for future data storage and for fast data transmission at terahertz rates without the systems being slowed down by the pileup of heat.
From Science Daily ● Oct. 24, 2025
Traffic would be heavy on the bridge due to an accident, and because we were paid for travel time, we'd hope that the pileup involved at least one piece of heavy machinery.
From "Me Talk Pretty One Day" by David Sedaris
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.
