'Well's' in the Bible

He looked, and behold, a well in the field, and, behold, three flocks of sheep lying there by it. For out of that well they watered the flocks. The stone on the well's mouth was large.

There all the flocks were gathered. They rolled the stone from the well's mouth, and watered the sheep, and put the stone again on the well's mouth in its place.

They said, "We can't, until all the flocks are gathered together, and they roll the stone from the well's mouth. Then we water the sheep."

It happened, when Jacob saw Rachel the daughter of Laban, his mother's brother, and the sheep of Laban, his mother's brother, that Jacob went near, and rolled the stone from the well's mouth, and watered the flock of Laban his mother's brother.

The woman took and spread the covering over the well's mouth, and spread out bruised grain on it; and nothing was known.