kush'-it: Whereas kushi, is elsewhere rendered Ethiopian, in 2Sa 18:21-32 it is rendered Cushite in the Revised Version (British and American) (see CUSHI and compare CUSHITE WOMAN). Its plural, which occurs in Zephaniah, Daniel and 2 Chronicles, also in the form kushiyim, in Amos, is uniformly translated Ethiopians, following Septuagint. The other Old Testament books use simply kush, for people as well as land.
The International Standard Bible Encyclopedia
Cushite
The International Standard Bible Encyclopedia, James Orr (1915). Public domain, from the CrossWire SWORD module.