'Shut' in the Bible

And Ahimaaz called out and said to the king, “All is well.” And he bowed before the king with his face to the ground and said, “Blessed be the Lord your God, who has handed over the men who lifted up their hands [to fight] against my lord the king.”

Then David came to his house (palace) at Jerusalem, and the king took the ten women, his concubines whom he had left to take care of the house, and placed them under guard and provided for them, but did not go in to them. So they were confined, and lived as widows until the day of their death.