dune
/djuːn
/noun
A mound or ridge of sand or other loose sediment formed by the wind, especially on the sea coast or in a desert: a sand dune...
- Nothing but vast sand dunes and arid desert far as the eye could see in all directions.
- It is generally agreed that the linear dunes in the Namib Sand Sea have extended from south to north.
- The group will face eight days of walking across rocky plateaus, sand dunes and salt pans.
Synonyms
bank, mound, hillock, hummock, rise, knoll, ridge, heap, drift, accumulation
Origin
Late 18th century: from French, from Middle Dutch dūne; related to Old English dūn 'hill' (see down3).