What is "war hammers"

Usage examples of "war hammers".

The gelding's forehooves were big as war hammers, shiny with neat's-foot oil, and shod with iron.

Paks could not begin to guess how many bales of cloth, rolls of carpet, boxes, bags, and trunks of moveable treasure, copper, bronze, and iron pots, dresses, gowns, robes, tunics, shirts, shoes, boots, buckles, combs, scrolls, daggers, swords, shields, bows, bowstrings, arrows, war hammers and wood hammers, battle axes and felling axes, reels of yarn and fine thread, needles, knives, forks, spoons of wood and pewter and silver and gold, figurines carved of wood and ivory and stone, harps and horns and pipes of all sizes they had taken and packed in wagons.