Nag poor journalist? (4)

I believe the answer is:

hack

I believe this is a double definition.

'nag' is the first definition.
(I know that nag can be written as hack)

'poor journalist?' is the second definition.

(Other definitions for hack that I've seen before include "Cut crudely - journalist" , "Kick on the shins" , "Journo" , "Ride" , "Chop at hired horse?" .)

I've seen this clue in The Times.

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