Easton's Bible Dictionary (1897)
Projecting; a flower, a cleft or pass, probably that near En-gedi, which leads up from the Dead Sea (2 Chr. 20:16) in the direction of Tekoa; now Tell Hasasah.
Smith's Bible Dictionary (1863)
(the projection), The cliff of, the pass by which the horde of Moabites, Ammonites and Mehunim made their way up from the shores of the Dead Sea to the wilderness of Judah near Tekoa. (2 Chronicles 20:16) only; comp. 2Chr 20:20 It was the pass of Ain Jidy—the very same route which is taken by the Arabs in their marauding expeditions at the present day.
Hitchcock's Bible Names (1869)
flower; branch; a lock of hair
Schaff's Bible Dictionary
ZIZ, THE CLIFF OF. 2 Chr 20:16. The paraphrase of this passage is "the going up of Ha-Ziz," and Grove suggests the name may survive in Husasah. The Pal. Memoirs note a Wady Husasah, 8 miles north of Ain Jidy (En-gedi). The similarity of the name is striking, but the site seems too far from En-gedi. Others have identified Ziz with the pass and cliff near En-gedi, a route how taken by Arab marauding-parties. This pass was the ascent through which
invaders from the south and east, after doubling the south end of the Dead Sea, entered the hill-country of Judaea. Ziz was the key of the pass.