1. Low hills at the base of a mountain or mountain range.
Usage: Usually used in plural form.; Refers to the transitional terrain between plains and mountains.

Examples

• The foothills of the Rocky Mountains are popular for hiking.
• Small towns dot the foothills surrounding the valley.
• We drove through the foothills before reaching the steep mountain passes.
• The foothills provide a gentler landscape than the peaks above them.
• Wildflowers bloom across the foothills each spring.
• The region's foothills are home to diverse wildlife.