hummock
nounUK /ˈhʌmək/
US /ˈhʌmək/
A hummock is a small hill or a little bump on the ground.
The kids played hide-and-seek behind the grassy hummock.
OTHER MEANINGS
2. A raised mound of ice in a frozen sea or glacier.
The explorers steered their sled around a large ice hummock.
3. A clump or tuft of grass growing higher than the ground around it.
The marsh was dotted with hummocks of tall grass.
4. A small rounded lump or heap of earth or rock.
He sat on a hummock of soil to rest.