spun sugar       
noun [ U ] uk/ˌspʌn ˈʃʊɡ.ər/ us/ˌspʌn ˈʃʊɡ.ɚ/
 (用来作甜点的装饰品或制作棉花糖的糖花的)糖线,纺纱糖
long strings of sugar, used to make decorations for desserts (= sweet dishes eaten as the last part of a meal) or to make candyfloss 
  Spun sugar is a delicacy pastry chefs use to garnish fancy desserts. 纺纱糖是糕点师用来装饰花式甜点的一种美味的东西。 
 Children chewed spun sugar in pink beehives of candyfloss. 孩子们嚼着像粉红蜂箱一样的棉花糖上的糖线。 
 - More examples
 - Gather the spun sugar into a ball and set aside.
 - There’s a star sugar cookie with spun sugar extending out from the top.
 - The desserts, especially the flan partially encased in spun sugar, would pass muster at a fancy restaurant.