Sailing competition (7)
![Ross](/clue/static/ross-mug.min.png)
'sailing competition' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for regatta that I've seen before include "event held on water" , "Boat-race meeting" , "Yacht-race event" , "Rowing, sailing, gala" , "Yachting festival" .)
(Other definitions for americas cup that I've seen before include "sailors want to win it" , "Yacht-racing trophy" , "Yachting prize" , "International yachting trophy" , "main competition" .)