What is the meaning of topper?

noun

• A worker who makes or adds the top to something.
• A worker who cuts tops off (of trees or vegetables etc.. )
• The person who is most outstanding or excellent; someone who tops all others.
  • usage: "he could beat the best of them"
  • synonyms: best
• An exceedingly good witticism that surpasses all that have gone before.
• A woman's short coat.
• A man's hat with a tall crown; usually covered with silk or with beaver fur.
  • synonyms: dress hat, high hat, opera hat, silk hat, stovepipe, top hat, beaver