Koa

Concise Bible Dictionary:

An unknown people or district classed with those whom Jerusalem had courted as lovers, but who would be its oppressors (Ezek. 23:2323The Babylonians, and all the Chaldeans, Pekod, and Shoa, and Koa, and all the Assyrians with them: all of them desirable young men, captains and rulers, great lords and renowned, all of them riding upon horses. (Ezekiel 23:23)). The Vulgate does not treat it as a proper name, but translates it principes, “noblemen.”

Strong’s Dictionary of Hebrew Words:

Number:
6970 (find all occurrences in KJV Bible)
Transliteration:
Qowa`
Phonic:
ko’-ah
Meaning:
probably from 6972 in the original sense of cutting off; curtailment; Koa, a region of Bab.
KJV Usage:
Koa

Jackson’s Dictionary of Scripture Proper Names:

alienation: a prince

Potts’ Bible Proper Names:

A level country; curtailment; line; hope; prince:―a region of Babylon, Ezek. 23:23. {Terra plana}