OT-LAW.filter - acv hollow:

acv@Genesis:32:25 @ And when he saw that he did not prevail against him, he touched the hollow of his thigh, and the hollow of Jacob's thigh was strained as he wrestled with him.

acv@Genesis:32:32 @ Therefore the sons of Israel do not eat the sinew of the hip which is upon the hollow of the thigh, to this day, because he touched the hollow of Jacob's thigh in the sinew of the hip.