'Opening' in the Bible

He looked and saw a well in a field. Three flocks of sheep were lying there beside it because the sheep were watered from this well. A large stone covered the opening of the well.

When all the flocks were gathered there, the shepherds would roll the stone from the opening of the well and water the sheep. The stone was then placed back on the well’s opening.

But they replied, “We can’t until all the flocks have been gathered and the stone is rolled from the well’s opening. Then we will water the sheep.”

As soon as Jacob saw his uncle Laban’s daughter Rachel with his sheep, he went up and rolled the stone from the opening and watered his uncle Laban’s sheep.