Boyd’s Bible Dictionary:
(threshing floor). Original name of Jerusalem; the “threshing floor” of the Jebushi or Jebusites (Josh. 15:8; 18:16,28; Judg. 19:10-11; 1 Chron. 11:4-5).
Concise Bible Dictionary:
The original name of Jerusalem (Josh. 18:16,28; Judg. 19:10,11; 1 Chron. 11:4-5). In Joshua 15:8 it is called “the Jebusite.”
Jackson’s Dictionary of Scripture Proper Names:
same as Jebusites