Boyd’s Bible Dictionary:
(backbone of a giant). An Israelite encampment (Num. 33:35-36; Deut. 2:8). Compare 1 Kings 9:26; 2 Chron. 8:17; 1 Kings 22:48.
Concise Bible Dictionary:
One of the encampments of the children of Israel, near the head of the gulf of Akaba. It was where Solomon had a navy of ships and where the ships of Jehoshaphat were broken (Num. 33:35-36; Deut. 2:8; 1 Kings 9:26; 1 Kings 22:48; 2 Chron. 8:17; 2 Chron. 20:36). Probably the same as Ain el Ghudyan, now ten miles up the dry bed of the Arabah, the sea having receded.