Boyd’s Bible Dictionary:
[ARMS.]
Concise Bible Dictionary:
Middle Ages battle axe.
Large hammer or ax, at the end of a long handle, a formidable ancient weapon (Jer. 51:20). It is referred metaphorically to Jacob as God’s weapon to break the nations into pieces.
Strong’s Dictionary of Hebrew Words:
Meaning:
from 5310; a smiter, i.e. a war club