thighs
n. countable B1 Intermediate US //ˈθaɪz// UK //θˈaɪz// thighs
n. the top part of your legs between your hips and your knees.
n. the proximal portion of the lower limb, situated between the hip and the knee. Refers to the anatomical region supported by the femur.
My thighs are sore after running up those hills.
The athlete wore compression sleeves on her thighs to help her muscles recover after the marathon.
The tailor took precise measurements of the client's waist, hips, and thighs to ensure the bespoke trousers would drape perfectly without pulling at the seams.
Usage
Almost always used in the plural when referring to the body part generally.