A hillside is an area of land that slopes upwards from a lower part to a higher part, often forming the side of a hill or mountain.
When we talk about a hillside, we usually mean a natural landscape feature with gentle or steep slopes. You might find houses, gardens, and fields on a hillside, especially in areas where mountains meet valleys. Imagine driving through the countryside and seeing rows of trees growing up the side of a hill – that's a hillside. Sometimes, people live on hillslides because they have great views from high up.
The side of a hill.
