Ephes Dammim, meaning "border of blood," (17:1 KJV) or Pas Dammim (11:13 KJV) is a biblical place name.
Mentioned in the Bible, a place in the tribe of Judah where the Philistines camped when David fought with Goliath (1 Samuel 17:1). Probably so called as having been the scene of frequent bloody conflicts between Israel and the Philistines. Its location has not been identified with any certainty.[1]