Fellow coming in to recycle rubbish (6)
I believe the answer is:
refuse
'rubbish' is the definition.
(thesaurus)
'fellow coming in to recycle' is the wordplay.
'fellow' becomes 'f' (abbreviation - of a society etc.).
'coming in to' means one lot of letters goes inside another.
'recycle' becomes 'reuse' ('reuse' can be a synonym of 'recycle').
'f' put into 'reuse' is 'REFUSE'.
(Other definitions for refuse that I've seen before include "Decline, repudiate" , "Don't take the rubbish" , "Pass up" , "Decline to accept garbage" , "Decline waste material" .)