Knoll, Hillock, Hummock,Pingo and Mound are words used for a small hill.
The word that means a small hill is "knoll."
A small natural hill.
The word that matches the definition of a small hill or mound is "knoll."
small hill
A hillock
A small natural hill.
a Bump?
Knoll.
hillock
C. small hill. In this context, a knoll refers to a small rounded hill or mound of earth.
Hill Liddle middle
It is a noun in the British Dialect, meaning a small hill or mound.