Check on nobleman (5)

I believe the answer is:

baron

'nobleman' is the definition.
(baron is a kind of nobleman)

'check on' is the wordplay.
'check' becomes 'bar' (bar can mean to restrict or check).
'bar'+'on'='BARON'

(Other definitions for baron that I've seen before include "Member of the nobility" , "See nobleman" , "Husband" , "captain of industry" , "Born a (anagram) - powerful man of business" .)

I've seen this clue in The Sun.

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