An exercise, usually performed lying on the stomach with weights, in which one lifts one or both heels towards the buttocks and then returns to the starting position, while the rest of the body is kept immobile.
Leg curl. (n.d.). In YourDictionary. Retrieved from https://www.yourdictionary.com/leg-curl
(plural leg curls)
(weightlifting) An exercise performed on a machine in which the hamstringmuscles are exerted to bend the knee while acting against resistance applied to the lower calf. The exercise may be performed while prone or standing, depending on the design of the machine.