Reference: Cush
Hastings
CUSH in OT designates Ethiopia, and is the only name used there for that region. It is the same as the Egyptian Kash or Kesh. Broadly speaking, it answers to the modern Nubia. More specifically, the Egyptian Kash extended southwards from the first Cataract at Syene (Eze 29:10), and in the periods of widest extension of the empire it embraced a portion of the Sudan. It was conquered and annexed by Egypt under the 12th Dynasty (c. b.c. 2000) and remained normally a subject country. After the decline of the 22nd (Libyan) Dynasty, the Cushites became powerful and gradually encroached on northern Egypt, so that at length an Ethiopian dynasty was established (the 25th, 728
See Verses Found in Dictionary
Then Joab said to the Cushite, "Go, tell the king what you have seen"; then the Cushite bowed down to Joab and ran [off].
He heard about Tirhakah, the king of Cush, saying, "Look, he has set out to fight with you," so he again sent messengers to Hezekiah, saying,
Zerah the Cushite came out against them with an army of a thousand thousands and three hundred chariots. And he came to Mareshah.
And Yahweh stirred up the spirit of the Philistines and the Arabs who [were] {near} the Cushites against Jehoram.
Can a Cushite change his skin, or a leopard his spots? [Then] you also will be able to do good, [who] are accustomed to doing evil.
Then all the officials sent Jehudi, the son of Nethaniah, the son of Shelemiah, the son of Cushi, to Baruch, {saying}, "The scroll that you read aloud from in the hearing of the people, take it in your hand and come." And Baruch the son of Neriah took the scroll in his hand and he came to them.
When Ebed-melech the Cushite, {a eunuch} who [was] in the house of the king, heard that they had put Jeremiah into the pit--now the king [was] sitting at the Gate of Benjamin--
Therefore look! I [am] against you and against your Nile streams, and I will make the land of Egypt into ruins, pile of rubble, desolation from Migdol [to] Syene and up to the boundary of Cush.
"Are you not like the Cushites to me, O people of Israel?" {declares} Yahweh. "Did I not bring up Israel from the land of Egypt and [the] Philistines from Caphtor and {the Arameans} from Kir?