sand
n. uncountable B1 Intermediate Oxford US //ˈsænd// UK //sˈænd// sand
n. the very small pieces of rock and shells you find on a beach or in a desert.
n. a granular material composed of finely divided rock and mineral particles. It is defined by size, being finer than gravel and coarser than silt.
The children are playing in the sand.
We spent the whole afternoon walking along the beach with the warm sand between our toes.
The relentless desert winds shift the sand into massive dunes that can migrate several meters across the landscape each year.
Usage
Uncountable when referring to the material; the plural 'sands' is used in literary contexts to describe a large area of it, such as a desert or a beach.