Easton's Bible Dictionary (1897)
Opulent, the mountain district lying to the north-east of Babylonia, anciently the land of the Guti, or Kuti, the modern Kurdistan. ” This name was sometimes shortened into Suti and Su, and has been regarded as = Shoa (Ezek. 23:23). Some think it denotes a place in Babylon.
Smith's Bible Dictionary (1863)
(rich), a proper name which occurs only in (Ezekiel 23:23) in connection with Pekod and Koa. The three apparently designate districts of Assyria with which the southern kingdom of Judah has been intimately connected, and which were to be arrayed against it for punishment.
Hastings' Dictionary of the Bible (1898) & Schaff's Bible Dictionary
SHO'A (opulent). Eze 23:23. Whether this is the name of a place, as Palmer suggests, or merely a title, is uncertain. Ewald renders it "crying;" Keil renders it "noble;" and the former takes it to be the name of some Chaldaean tribe.
Hitchcock's Bible Names (1869)
kings; tyrants