A place mentioned in the report of the battle between David and the Philistines in 2 Samuel 5:20 (compare 1 Chronicles 14:11). The Philistines encamped in the valley of Rephaim, while David withdrew to the hill-fortress of Adullam and thence proceeded to Baal perazim, where he defeated the Philistines. Consequently the place must have been situated in the valley of Rephaim; but more definite information concerning it can not be found. One is tempted to connect it with Mount Perazim (Isaiah 28:21).