IPA: /djuːn/
KK: /djun/
A hill or ridge made of sand that is formed by the wind.
The children loved to climb the tall dune at the beach.
The word 'dune' originates from Old French 'dune' (meaning a hill or mound of sand), which itself comes from the Middle Dutch 'dune' (meaning a sand hill). A dune refers to a hill or mound formed by the accumulation of sand, typically found in deserts or near beaches.
Imagine a 'hill of sand' — that's what a dune is, coming from the Old French word for a sand hill.