바람에 의해 모래가 쌓여 만들어진 언덕이나 능선.
A mound, ridge, or hill of loose sand heaped up by the wind, commonly found in deserts or near sea coasts.
예문:
"The wind constantly reshapes the massive dunes of the Sahara Desert."
"Coastal grasses help stabilize the dunes and prevent erosion from the sea."
"We watched the sunset from the top of a high sand dune overlooking the ocean."