A tool or instrument of steel, or of iron with a steel edge or
   blade, for felling trees, chopping and splitting wood, hewing timber,
   etc. It is wielded by a wooden helve or handle, so fixed in a socket or
   eye as to be in the same plane with the blade. The broadax, or
   carpenter's ax, is an ax for hewing timber, made heavier than the
   chopping ax, and with a broader and thinner blade and a shorter handle.