'Slopes' in the Bible

So Joshua struck all the land, the hill country, the Negev (South country) and the lowland and the slopes [that descend to the Dead Sea] and all their kings. He left no survivor, but he utterly destroyed all who breathed, just as the Lord, the God of Israel, had commanded.

and the Arabah [plain] as far as the Sea of Chinnereth (Galilee) eastward, and as far as the sea of the Arabah, the Salt (Dead) Sea, eastward toward Beth-jeshimoth, and southward to the foot of the slopes of [Mount] Pisgah;

in the hill country, in the lowland (foothills), in the Arabah [plain], on the slopes [descending to the Dead Sea], and in the wilderness, and in the Negev (South country)—the [lands of the] Hittite, the Amorite and the Canaanite, the Perizzite, the Hivite and the Jebusite:

and Beth-peor and the slopes of Pisgah and Beth-jeshimoth,