'Heel' in the Bible

And I will put enmity between thee and the woman, and between thy seed and her seed; it shall bruise thy head, and thou shalt bruise his heel.

And after that came his brother out, and his hand took hold on Esau's heel; and his name was called Jacob: and Isaac was threescore years old when she bare them.

And he saith, 'Is it because one called his name Jacob that he doth take me by the heel these two times? my birthright he hath taken; and lo, now, he hath taken my blessing;' he saith also, 'Hast thou not kept back a blessing for me?'

Gad troops will rush upon him; But he will rush upon the heel.