dune
Americannoun
noun
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A hill or ridge of wind-blown sand. Dunes are capable of moving by the motion of their individual grains but usually keep the same shape.
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See more at barchan dune draa longitudinal dune seif dune transverse dune
Etymology
Origin of dune
1780–90; < French, Old French < Middle Dutch dūna; cognate with down 3
Explanation
A dune is a natural hill made of sand, either on a beach or in a desert. It's a good idea to bring plenty of water and a camel if you're trekking across sand dunes in the Sahara. Sometimes people drive special vehicles on the dunes beside the ocean — these are sometimes called "dune buggies." These seaside dunes are formed by a combination of wind and water, while the dunes in a desert are purely the result of wind. The origin of the word dune is somewhat uncertain, although it probably comes from a French word with an older Germanic root.
Vocabulary lists containing dune
Physical Geography - Introductory
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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.
Emojis, Disney characters, cigarettes and more pile up in humorous scenes that include a saber-toothed tiger driving a dune buggy and a pair of corvids fighting over a worm.
From The Wall Street Journal • Feb. 27, 2026
"There are now four known species of trapdoor spiders in California that live exclusively in coastal dune habitats," said corresponding author Emma Jochim, a doctoral student in the UC Davis Department of Entomology and Nematology.
From Science Daily • Nov. 2, 2025
You could not tell what was a sand dune and what was a snow mound.
From Salon • Jan. 29, 2025
It was being in a penguin holiday camp – there were lovers having an argument, kids swimming, others sunbathing and some were gathered at a wee dune, having what looked like a meeting.
From BBC • Sep. 21, 2024
We climb a dune, and a black sheet of sea spreads before us, its ripples silver-bright in the moonlight.
From "Without Refuge" by Jane Mitchell
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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.