1. the middle part of the human body, especially the area around the waist and abdomen
2. the middle part or section of something

Examples

• She wore a belt around her midsection.
• The doctor examined his midsection for signs of injury.
• Core exercises help strengthen the midsection.
• The midsection of the airplane houses the cargo hold.
• The bridge’s midsection was damaged in the storm.
• He felt pain in his midsection after eating too much.
• The midsection of the book contains the most exciting chapters.