Topper

n.
  1. One that tops, in any sense of the verb;
  2. A top hat.
  3. Tobacco left in the bottom of a pipe bowl; -- so called from its being often taken out and placed on top of the newly filled bowl. Also, a cigar stump.
    1. A cover of a top layer or part.
    2. One that excels, surpasses, or is extraordinary of its kind.
    3. Any device for cutting off tops; as, a turnip topper.
    4. One who tops steel ingots.
    5. A three-square float (file) used by comb makers.