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dune

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dune/ˈduːn/
British/ˈdjuːn/noun
pluraldunes
dune
/ˈduːn/British/ˈdjuːn/
noun
pluraldunes
Learner's definition of DUNE  
[count]
: a hill of sand near an ocean or in a desert that is formed by the wind
— see color picture on this page
— called also sand dune
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