|Easton's Bible Dictionary|
Thicket, a wood in the mountains of Judah where David hid when pursued by Saul (1 Samuel 22:5). It was possibly while he was here that the memorable incident narrated in 2 Samuel 23:14-17, 1 Chronicles 11:16-19 occurred. This place has not been identified, but perhaps it may be the modern Kharas, on the borders of the chain of mountains some 3 miles east of Keilah.
Int. Standard Bible Encyclopedia
ha'-reth (chhareth, in pause).
Hareth (1 Occurrence)
1 Samuel 22:5 And the prophet Gad said unto David, Abide not in the hold; depart, and get thee into the land of Judah. Then David departed, and came into the forest of Hareth. (KJV DBY WBS YLT)