Curling-stone clipped on American ice (7)

I believe the answer is:
granita
'ice' is the definition.
(I've seen this before)
I can't explain the rest of the clue.
Can you help me to learn more?
(Other definitions for granita that I've seen before include "final course perhaps" , "Kind of water ice - a rag tin (anag)" , "Crushed ice drink" , "type of sorbet" , "cold dessert" .)
