Crossword Genius

Quite a blow as aborted process throws one out (7)

Ross

I believe the answer is:

mistral

'quite a blow' is the definition.
(strong wind)

I cannot understand how the remainder of the clue works.

(Other definitions for mistral that I've seen before include "Cold dry wind in southern France" , "Famous wind in the Rhone Valley blowing towards the Med" , "French wind" , "Strong wind down the 20 valley" , "Violent northeast wind of southern France" .)

I've seen this clue in The Times.
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