= causative action by which humans use a hammer to shape iron and other metals
to hammer, to forge
Shape
literally: to hammer; hence: = causative action by which humans use an iron tool to cause an object to have a thin cutting edge, in order to make it useful and effective as a tool
to sharpen, to whet
See
literally: to sharpen (one's) eyes; hence: = action by which someone glares at someone in a menacing way