“Gittites” means belonging to Gath

Gittites: the 600 men who followed David from Gath, under Ittai the Gittite, (2 Samuel 15:18,19) and who probably acted as a kind of body-guard. Obed-edom "the Gittite" may have been so named from the town of Gittaim in Benjamin, (2 Samuel 4:3; Nehemiah 11:33) or from Gath-rimmon.