🔼The name Gob in the Bible
There's only one town named Gob in the Bible, and it's mentioned twice, both times in the context of David's army fighting the Philistine giants of Gath, the four sons of the famous Goliath: Ishbi-benob, Saph, Goliath the Second and their unnamed brother.
In the parallel text of 1 Chronicles 20:4, our town is called גזר (Gezer).
🔼Etymology of the name Gob
The name Gob either comes from the verb גבב, meaning to be hollow, or the verb גוב meaning to dig:
For a meaning of the name Gob, NOBSE Study Bible Name List reads A Pit.
Alfred Jones (Dictionary of Old Testament Proper Names) derives our name from the verb גוב meaning to dig and reads Pit.
BDB Theological Dictionary does not offer an interpretation of the name Gob but lists it under the root גבב and states that it is comparable to words in Aramaic, meaning den, and other cognate language where it means well or cistern.