fetal positionnoun [ S ]
uk/ˈfiː.təl pəˌzɪʃ.ən//ˈfiː.t̬əl pəˌzɪʃ.ən/UK also foetal positiona position in which someone lies in a curved shape with legs and arms bent and close to the body:
He was curled up in a fetal position on the floor, sobbing.