🔼The name Zelek in the Bible
There is only one man named Zelek in the Bible, and that is Zelek the Ammonite, one of David's mighty-men (2 Samuel 23:37, 1 Chronicles 11:39). We know that he existed but no further details of this man's life and deeds are submitted.
🔼Etymology of the name Zelek
There's nothing in the Hebrew Bible that resembles the name Zelek, but that doesn't mean that it didn't exist in Hebrew. Scholars have identified an Aramaic verb צלק (salaq), from which our name probably derives. This verb means to cleave.
For a meaning of the name Zelek, NOBSE Study Bible Name List reads Cleft and Jones' Dictionary of Old Testament Proper Names proposes Fissure. BDB Theological Dictionary does not offer an interpretation of this particular name.