What is a drillmaster?

What is a drillmaster ?

http://images.search.yahoo.com/search/images;_ylt=A0LEVyzEzPNTSXAAXnxXNyoA?p=drillmaster&fr=opera2&fr2=piv-web

I think it also means “drill instructor”.

It depends on the context.
Drillmaster is the brand name of a tool. A drillmaster can be the name of a carpenter’s tool. A drill master can be a person who is teaching, directing, controlling, ordering, drilling a group of people involved in – a marching band, a group of soldiers, etc.