Crossword Genius

Fighter who's creating a splash (7)

Ross

I believe the answer is:

spatter

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'a splash' is the definition.
('spatter' can be a synonym of 'splash')

I cannot understand how the remainder of the clue works.

Can you help me to learn more?

(Other definitions for spatter that I've seen before include "Sprinkle" , "Cover with droplets" , "shower" , "Set part (anag.)" , "spray" .)

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