Easton's Bible Dictionary (1897)
Cleft, an Ammonite; one of David’s valiant men (2 Sam. 23:37).
Hastings' Dictionary of the Bible (1898) & Schaff's Bible Dictionary
ZE'LEK (fissure), one of David's warriors. 2 Sam 23:37; 1 Chr 11:39.
Hitchcock's Bible Names (1869)
the shadow or noise of him that licks or laps