Also see definition of "Gob" in Word Study
Gob
In Bible versions:
Gob: NET AVS NIV NRSV NASB TEV
cistern; grasshopper
a town of the Philistines 25 km SE of Joppa
NET Glossary: Array
a town of the Philistines 25 km SE of Joppa
NET Glossary: Array
Google Maps:
Gob
(31° 52´, 34° 55´);

Hebrew
Strongs #01359: bg Gob or (fully) bwg Gowb
Gob = "cistern"1) a place which was the scene of two encounters between David's
warriors and the Philistines (also '"Gezer')
1359 Gob gobe
or (fully) Gowb {gobe'}; from 1461; pit; Gob, a place in Palestine: KJV -- Gob.see HEBREW for 01461
Gob [nave]
GOB, also called Gezer, which see.Gob [ebd]
a pit, a place mentioned in 2 Sam. 21:18, 19; called also Gezer, in 1 Chr. 20:4.
GOB [smith]
(cistern), a place mentioned only in (2Â Samuel 21:18,19) as the scene of two encounters between David?s warriors and the Philistines. In the parallel account in (1Â Chronicles 20:4) the name is given asGOB [isbe]
GOB - gob (gobh): A place mentioned in 2 Sam 21:18 f as the scene of two of David's battles with the Philistines. The name appears here only. In the parallel passage, 1 Ch 20:4, it is called Gezer (compare Ant, VII, xii, 2). Certain texts read "Nob" for "Gob," while Syriac and Septuagint read "Gath." The latter is probably correct.
Also see definition of "Gob" in Word Study