midriff /midˈrif/

1. The diaphragm, the division in the middle of the body between the abdomen and the thorax, or stomach and chest
2. (loosely) the area of the body, or of clothing, from below the breast down to the waist

• school-leavers
• school-leaving
• schoolma'am
• schoolmaid
• schoolmaids
• schoolman
• schoolmarm
• schoolmarmish
• schoolmarms
• schoolmaster
• schoolmastered
• schoolmastering
• schoolmasterish
• schoolmasterly
• schoolmasters
• schoolmastership
• schoolmate
• schoolmates
• schoolmen
• schoolmistress
• schoolmistresses
• schoolmistressy
• school night
• school nights
• school nurse