Longman Dictionary of Contemporary English
foetal position
noun
EXAMPLES FROM CORPUS
▪ Emily was curled up in a foetal position, naked, on the floor, sobbing.
▪ He struggled painfully around into a new foetal position and started work on the back of the back seat.
▪ He was a short man, slight in build, and was curled up in the foetal position.
▪ McAggott climbed over the sergeant, who had assumed the foetal position, and staggered back to his office.
▪ Some even resort in the middle of a battle to lying motionless in a foetal position.
▪ The spasms nearly always cause targets to curl into a foetal position.
▪ This one is about three hours old and still lying in the foetal position in which it emerged from the egg.