1. a low hill at the base of a mountain or mountain range

Examples

• The small town nestled in the foothills of the Rocky Mountains.
• We hiked through the foothills before attempting the main peak.
• The vineyard was planted on the gentle slopes of the foothills.
• From the foothills, we could see the snow-capped mountains above.
• The foothills provided a perfect training ground for mountain climbers.
• Wild flowers bloomed across the foothills in spring.