The king of Hormah - Supposed to be the place where the Israelites were defeated by the Canaanites see Numbers 14:45; and which probably was called Hormah, הרמה chormah, or destruction, from this circumstance.

Hormah

Numbers 14:45 Then the Amalekites came down, and the Canaanites which dwelled in that hill, and smote them, and discomfited them, even to Hormah.

Numbers 21:3 And the LORD listened to the voice of Israel, and delivered up the Canaanites; and they utterly destroyed them and their cities...

Arad Eusebius places this city in the neighbourhood of Kadesh, four miles from Malathis, and twenty from Hebron.

Numbers 21:1 And when king Arad the Canaanite, which dwelled in the south, heard tell that Israel came by the way of the spies...