bumper
1 Americannoun
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a person or thing that bumps.
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a metal guard, usually horizontal, for protecting the front or rear of an automobile, truck, etc.
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any protective rim, guard, pad, or disk for absorbing shock and preventing damage from bumping as a rubber-tipped doorstop or an old tire on the side of a boat.
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a cup or glass filled to the brim, as with beer.
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Informal. something unusually large.
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a person who molds bricks by hand.
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Foundry. a machine for ramming sand into a mold.
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a carangid fish, Chlorosombrus chrysurus, of southern U.S. and Cuban coastal seas.
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Television.
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Also called bumper tease. Also bump in a news program, a brief teaser coming at the end of a segment just before commercials, announcing or previewing a forthcoming story.
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Also called commercial bumper,. Also called break bumper. a brief interval of music, graphics, or voiceover serving as a transition between program and advertising content.
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adjective
verb (used with object)
noun
noun
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a glass, tankard, etc, filled to the brim, esp as a toast
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an unusually large or fine example of something
adjective
verb
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(tr) to toast with a bumper
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(tr) to fill to the brim
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(intr) to drink bumpers
noun
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a horizontal metal bar attached to the front or rear end of a car, lorry, etc, to protect against damage from impact
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a person or machine that bumps
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cricket a ball bowled so that it bounces high on pitching; bouncer
noun
Etymology
Origin of bumper1
First recorded in 1750–60; bump + -er 1
Origin of bumper2
First recorded in 1890–95; expressive coinage, perhaps blend of butt 1 and stump + -er 1
Explanation
A bumper is the curved bar across the front of a car that protects it from getting dented or scratched during minor accidents. If you bump into your mailbox, you may damage your car's bumper. A car's bumper is designed to absorb as much impact as possible, protecting the more important parts of the car. A bumper car at a carnival is made to be slammed into other bumper cars — the bumpers help keep riders safe from injury, while the cars travel too slowly to cause damage. The earliest bumpers, in the 1830s, were on the front of trains. The phrase "bumper-to-bumper traffic" means an unusually dense traffic jam.
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.
All summer, voters, consultants, and pundits have repeatedly attached Obama’s name like a Homeric epithet to a bumper crop of young, talented, and mostly male candidates running across the country.
From Slate ● Sep. 9, 2026
JapanLA‘s owner says her team is working every day to block and silence trolls. She‘s still reeling from how quickly her business went from a bumper batch of orders to battling for its life.
From Los Angeles Times ● Sep. 4, 2026
The number of pure defence startups around Munich has doubled to around 60 in recent years, according to the local Chamber of Commerce and Industry, while drone makers have been announcing bumper fund-raising rounds.
From Barron's ● Sep. 1, 2026
The German maker of energy equipment is reporting record orders and bumper profits amid a burgeoning U.S. data center sector.
From The Wall Street Journal ● Aug. 26, 2026
The corporal on duty at the sentry box braced to attention when he saw the officer’s sticker on the front bumper of the car.
From "The Great Santini" by Pat Conroy
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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.