Ephes-dammim, — also known as Pas-dammim (1 Chr. 11:13) — means boundary of blood.
Mentioned in the bible, a place in the tribe of Judah where the Philistines camped when David fought with Goliath (1 Sam. 17:1). Probably so called as having been the scene of frequent bloody conflicts between Israel and the Philistines. It has been identified with the modern Beit Fased, i.e., "house of bleeding", near Shochoh.