Crossword Genius

Expert, dab hand (5)

Ross

I believe the answer is:

whizz

(Other definitions for whizz that I've seen before include "Move rapidly - make hissing sound" , "Move rapidly (colloq.)" , "Person with great skill" , "Zoom" , "Skilled person (colloq.)" .)

I've seen this clue in The Times.
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