A legitimate punch (5)

I believe the answer is:

right

I believe this is a double definition.

'a legitimate' is the first definition.
(thesaurus)

'punch' is the second definition.
(I've seen this before)

(Other definitions for right that I've seen before include "Privilege" , "Correct; appropriate" , "True - just claim" , "Girth (anag)" , "Correct - starboard" .)

I've seen this clue in the Evening Standard.

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