Business bigwig, for short (4)

I think it could be either:

Which length description are you looking for?:

exec

'business bigwig for short' is the definition.
(I've seen this in another clue)

This is the entire clue.

(Other definitions for exec that I've seen before include "Board member" , "CEO?" , "Businessman" , "Senior businessperson (abbr)" , "Business leader" .)

I've seen this clue in the Universal, the Thinks.com, the Wall Street Journal, the USA Today and the Newsday.com.

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