waist

waist /ˈweɪst/ noun
plural waists
waist
/ˈweɪst/
noun
plural waists
Britannica Dictionary definition of WAIST
[count]
1 
: the middle part of your body between the hips and chest or upper back that is usually narrower than the areas above and below it
— see picture at human
2 
: the part of a piece of clothing that fits around your waist

— waisted

/ˈweɪstəd/ adjective
— usually used in combination