(Composed of the names of two Syrian idols), the name of a place in the valley of Megiddo. It is alluded to by the prophet (Zechariah 12:11) in a proverbial expression derived from the lamentation for Josiah, who was mortally wounded near this place (2 Chronicles 35:22-25). It has been identified with the modern Rummaneh, a village "at the foot of the Megiddo hills, in a notch or valley about an hour and a half south of Tell Metzellim."
These dictionary topics are from M.G. Easton M.A., D.D., Illustrated Bible Dictionary, Third Edition, published by Thomas Nelson, 1897. Public Domain, copy freely.
Easton, Matthew George. "Entry for 'Hadad-rimmon'". "Easton's Bible Dictionary".