1. the arched upper surface of the human foot between the toes and the ankle
2. the part of a shoe or sock that covers the instep of the foot

Examples

• She felt pain in her instep after running the marathon.
• The ballet dancer has a high instep that creates beautiful lines.
• These shoes are too tight across the instep.
• The sock has extra padding in the instep area.
• He massaged his sore instep after the long hike.
• The shoe’s instep strap provides additional support.