waist waist /ˈweɪst/

noun

1. () The narrowing of the body between the ribs and hips  ( waistline , waist )
   the narrowing of the body between the ribs and hips
    He had to loosen his belt because his waist had expanded after the holidays
   He had to loosen his belt because his waist had expanded after the holidays
   
   
2. The narrow part of the shoe connecting the heel and the wide part of the sole  ( shank , waist )
   the narrow part of the shoe connecting the heel and the wide part of the sole