'Wadi' in the Bible

Saul proceeded to the city of Amalek, where he set an ambush in the wadi.

So David went, accompanied by his six hundred men. When he came to the Wadi Besor, those who were in the rear stayed there.

David and four hundred men continued the pursuit, but two hundred men who were too exhausted to cross the Wadi Besor stayed there.

Then David approached the two hundred men who had been too exhausted to go with him, those whom they had left at the Wadi Besor. They went out to meet David and the people who were with him. When David approached the people, he asked how they were doing.