fetal position (US) noun
or British foetal position
or British foetal position
Learner's definition of FETAL POSITION
[singular]
: a position in which you lie on your side with both legs and both arms bent and pulled up to your chest and with your head bowed forward胎姿(身体侧屈曲,腿臂向胸前蜷曲,头前俯)