“And after this it came to pass, that David smote the Philistines, and subdued them: and David took Methegammah out of the hand of the Philistines. Methegammah: or, the bridle of Ammah”
So that they paid no more tribute. Cross references: : 1 Chron. 18:1 ; Ps. 60:2 Or, Metheg Ammah.