flourish

n.

1. A dramatic or stylish movement, as of waving or brandishing: 

• "A few ... musicians embellish their performance with a flourish of the fingers" Frederick D. Bennett.
  

2. An embellishment or ornamentation: 

• a signature with a distinctive flourish.
  

3. An ostentatious act or gesture: 

• a flourish of generosity.
  

4. Music A showy or ceremonious passage, such as a fanfare.

... Am-Heritage, http://www.thefreedictionary.com/flourish