'Slopes' in the Bible

So Joshua struck all the land--the hill country, the Negev, the Shephelah, and the slopes--and all their kings; he left behind no survivor, and {all that breathed} he utterly destroyed as Yahweh the God of Israel commanded.

and the Arabah up to the Kinnereth Sea to the east, and as far as the sea of Arabah, the Salt Sea to the east, {in the direction of} Beth Jeshimoth, and to [the area] southward, {at the foot of} the slopes of Pisgah;

in the hill country, the Shephelah, the Arabah, on the slopes, in the wilderness, and in the Negev; the Hittites, the Amorites, the Canaanites, the Perizzites, the Hivites, and the Jebusites:

Beth Peor, the slopes of Pisgah, and Beth Jeshimoth;