'Heel' in the Bible

“And I will put enmity (open hostility)Between you and the woman,And between your seed (offspring) and her Seed;He shall [fatally] bruise your head,And you shall [only] bruise His heel.”

Afterward his brother came out, and his hand grasped Esau’s heel, so he was named Jacob (one who grabs by the heel, supplanter). Isaac was sixty years old when Rebekah gave birth to them.