= short bar, usually made of metal, placed in the mouth of a horse; its ends, which project from the mouth of the animal, are attached to ropes or leather straps that fit over the head as the bridle; used to steer the horse; associated with control and, indirectly, with lack of wisdom

literally: bit; hence: = state of being in control over a certain area

= location; taken by David from the control of the Philistines