'Skin' in the Bible

And early in the morning Abraham got up, and gave Hagar some bread and a water-skin, and put the boy on her back, and sent her away: and she went, wandering in the waste land of Beer-sheba.

And when all the water in the skin was used up, she put the child down under a tree.

Then God made her eyes open, and she saw a water-spring, and she got water in the skin and gave the boy a drink.

Then Jacob took young branches of trees, cutting off the skin so that the white wood was seen in bands.