King James Bible
King James Version (KJV)

From naphats; a smiter, i.e. A war club -- battle ax.
see HEBREW naphats
H4661. mappets
מַמֵּץ noun masculine war-club (literally a shatterer); — לִי מַמֵּץאַֿתָּה Jeremiah 51:20 a war-club art thou to me (׳י addressing Babylon, compare Gf Gie).