'Carts' in the Bible

And David got up early in the morning, and, giving the sheep into the care of a keeper, took the things and went as Jesse had said; and he came to the lines where the carts were, when the army was going out to the fight giving their war-cry.

And David got up and came to the place where Saul's tents were: and David had a view of the place where Saul was sleeping with Abner, the son of Ner, the captain of his army: and Saul was sleeping inside the ring of carts, and the tents of the people were all round him.

So David and Abishai came down to the army by night: and Saul was sleeping inside the ring of carts with his spear planted in the earth by his head: and Abner and the people were sleeping round him.