Big gun (5)

I believe the answer is:

mogul

'big gun' is the definition.
(thesaurus)

This is all the clue.

(Other definitions for mogul that I've seen before include "Mound of hard snow on ski-slope" , "bigwig" , "Important person - ski slope bump" , "Indian emperor - important person" , "Powerful businessperson" .)

I've seen this clue in The New York Times.

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