Webster's 1828 Dictionary
BURNISHER
n.The person who polishes, or makes glossy. 1. An instrument used in polishing, of different kinds. It may be a piece of round polished steel, a dog's or wolf's tooth, a piece of copper, agate or pebble, etc. It is used for giving a gloss or smoothness to metals, to the edges of books, etc.
Webster's 1913 Dictionary
BURNISHER
BURNISHER Bur "nish *er, n.
1. One who burnishes.
2. A tool with a hard, smooth, rounded end or surface, as of steel, ivory, or agate, used in smoothing or polishing by rubbing. It has a variety of forms adapted to special uses.
The Wordsmith Dictionary