Carchemish means in the bible: Fort of Chemosh. An area on the west bank of the Euphrates River. This town commanded the crossing of the Euphrates River on the High Road from Assyria to Syria. It was also the site of an important battle in 605 B.C. Between Nebuchadnezzar & Pharaoh Necho II Chr. 35:20; Jer. 46:2.
(in Bible Dictionary)