|Easton's Bible Dictionary|
A mallet or heavy war-club. Applied metaphorically (Jeremiah 51:20) to Cyrus, God's instrument in destroying Babylon.
Noah Webster's Dictionary
(n.) A kind of broadax formerly used as an offensive weapon.
Int. Standard Bible Encyclopedia
See ARMOR, ARMS, III, 1; AX (AXE).
Battle-axe (2 Occurrences)
Psalms 35:3 Draw out also the spear, and stop the way against them that pursue me: Say unto my soul, I am thy salvation. (See JPS NAS)
Jeremiah 51:20 Thou art my battle-axe and weapons of war: and with thee will I break in pieces the nations; and with thee will I destroy kingdoms; (ASV)