'Hair' in the Bible

Then said she, I pray thee, let the king remember Jehovah thy God, that the avenger of blood destroy not any more, lest they destroy my son. And he said, As Jehovah liveth, there shall not one hair of thy son fall to the earth.

And when he cut the hair of his head (now it was at every year's end that he cut it; because it was heavy on him, therefore he cut it); he weighed the hair of his head at two hundred shekels, after the king's weight.