hammer

Boyd’s Bible Dictionary:

Same as now
(Judg. 4:21; Isa. 44:12). Mighty force (Jer. 23:29; 50:23).

Strong’s Dictionary of Hebrew Words:

Transliteration:
keylaph
Phonic:
kay-laf’
Meaning:
from an unused root meaning to clap or strike with noise; a club or sledge-hammer
KJV Usage:
hammer