Crossword Genius

My business runs (3)

Ross

I believe the answer is:

cor

'my' is the definition.
(both are expressions of surprise)

'business runs' is the wordplay.
'business' becomes 'co' (short for company).
'runs' becomes 'r' (cricket abbreviation).
'co'+'r'='COR'

(Other definitions for cor that I've seen before include "Expression of surprise" , "Surprised expression" , "Gosh" , "Blimey" .)

I've seen this clue in The Times and The Sunday Times.
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