dune — English Dictionary

Noun

1. A ridge or hill of sand piled up by currents of wind or water.

   Synonyms

   sand dunesand-dune

   Related words

   duned

   Examples

   Heavy line segments (lengthened for clarity) indicate locations of deep-sea dunes.

   More examples (1)

   In the early 2000s, space probes [confirmed Mars as] having dunes […] Their shapes are identical to their Saharan cousins', but they are ten times bigger. In contrast, underwater dunes are a hundred times smaller than their counterparts on solid ground. This universality of dunes is a blessing for physicists: their comparative study confirmed the models that describe the formation of dunes on Earth.

Noun

1. a ridge of sand created by the wind; found in deserts or near lakes and oceans

   Synonyms

   sand dune

   Broader terms

   ridge