Writer ringing about groom (5)
I believe the answer is:
preen
'groom' is the definition.
(thesaurus)
'writer ringing about' is the wordplay.
'writer' becomes 'pen' (I've seen this before).
'ringing' indicates putting letters inside.
'about' becomes 're' (regarding**).
'pen' placed around 're' is 'PREEN'.
(Other definitions for preen that I've seen before include "(Of a bird) tidy and clean feathers" , "Titivate oneself" , "Groom with great care" , "Tidy/clean (feathers)" , "demonstrate pride" .)