'Flask' in the Bible

And Abraham rose up early in the morning, and took bread, and a flask of water, and gave it to Hagar, putting it on her shoulder and the child, and sent her away. And she departed, and wandered about in the wilderness of Beer-sheba.

And the water was exhausted from the flask; and she cast the child under one of the shrubs,

And God opened her eyes, and she saw a well of water; and she went and filled the flask with water, and gave the lad drink.