Forty or fifty women were sittingcross-legged on the ground.
四五十个妇女正盘腿坐在地上。
《柯林斯英汉双解大词典》
2
I made the mistake of sittingcrosslegged on the floor without cushions. My ankle put pressure on my other leg’s shin bone which was a small ache to begin with but eventually grew into a nasty pain.
This narrow muscle of the thigh passes obliquely across the front of the thigh and helps rotate the leg to the position assumed in sittingcross-legged.