topper

noun

1. a person or thing that tops.
2. a woman’s loose, usually lightweight topcoat, especially one that is knee-length or shorter.
3. Informal. top hat.
4. capper(def 2).
5. British Slang. an excellent or well-liked person or thing.

noun

1. an informal name for top hat
2. a person or thing that tops
3. informal a remark that caps the one before