'Desert' in the Bible

And the Ziphites come in unto Saul, at Gibeah, saying, 'Is not David hiding himself in the height of Hachilah, on the front of the desert?'

And Saul encampeth in the height of Hachilah, which is on the front of the desert, by the way, and David is abiding in the wilderness, and he seeth that Saul hath come after him in to the wilderness;