The Collaborative International Dictionary of English v.0.48:

Burnisher \Bur"nish*er\, n.
   1. One who burnishes.
      [1913 Webster]

   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.
      [1913 Webster] Burnoose