iceberg
Americannoun
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icebergs
plural
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a large floating mass of ice, detached from a glacier and carried out to sea.
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Informal. an emotionally cold person.
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Australian Informal. a person who swims or surfs regularly in winter.
idioms
noun
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a large mass of ice floating in the sea, esp a mass that has broken off a polar glacier
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the small visible part of something, esp a problem or difficulty, that is much larger
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slang a person considered to have a cold or reserved manner
Discover More
Most of the ice in an iceberg is underwater, leaving only the “tip of the iceberg” visible — a fact that is often alluded to in discussions of subjects in which the most important aspects are hidden from view.
Other Word Forms
Noun Inflected Forms
Etymology
Origin of iceberg
1765–75; half Anglicization, half adoption of Dutch ijsberg ice mountain; cognate with German Eisberg, Swedish isberg
Explanation
An iceberg is a huge chunk of ice that breaks off of a glacier and floats around the ocean. Most of an iceberg is under water and can't be seen; that's how a sneaky iceberg managed to sink the Titanic. Icebergs exist in the coldest waters on the planet — the largest icebergs ever observed have been in Antarctica. An iceberg is blamed in the famous sinking of the Titanic in 1912, and the disaster inspired a new system for tracking and measuring icebergs. Another kind of iceberg is the lettuce, which is crisp and nearly as pale as an actual iceberg. The colloquial "tip of the iceberg" means the smallest hint of a much larger problem.
Vocabulary lists containing iceberg
Physical Geography - Introductory
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Physical Geography - Middle School
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Physical Geography - High School
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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.
See Examples For:
The salmonella outbreak overlaps with the nation’s largest-ever cyclospora outbreak, tied to shredded iceberg lettuce, that has sickened thousands of people over the past several weeks.
From MarketWatch ● Aug. 6, 2026
Taylor has since voluntarily removed iceberg lettuce sourced from central Mexico from the U.S. market.
From The Wall Street Journal ● Aug. 3, 2026
Taylor Farms also issued a recall that day of all iceberg lettuce sourced from Central Mexico from a certain time period.
From Los Angeles Times ● Jul. 31, 2026
Video captured by an eyewitness showed the moment the iceberg turned over, creating waves close to the coastal city.
From BBC ● Jul. 30, 2026
Makes my heart sink like that big ship that hit an iceberg underwater.
From "Fast Pitch" by Nic Stone
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I instead recall coasting past a flotilla of icebergs in Alaska’s Glacier Bay.
From Los Angeles Times ● Jul. 8, 2026
Many Antarctic glaciers are tidewater glaciers, meaning they sit on the ocean floor and extend into the sea, where they release icebergs.
From Science Daily ● Feb. 26, 2026
And because he is the centerpiece of the show, I rely on Noah a lot for guidance and help figuring out how to steer through all the icebergs.
From Los Angeles Times ● Jan. 8, 2026
Miles decorated the office with pictures of penguins jumping off icebergs and gave out “penguin awards” to people who tried ideas that didn’t work and kept trying.
From The Wall Street Journal ● Dec. 29, 2025
Everything is whirling around in a big bunch of motion and energy crashing into each other at the size of atoms and icebergs, and will crumble eventually.
From "Everything Sad Is Untrue" by Daniel Nayeri
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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.