Return bag to gossip (3)
I believe the answer is:
gab
'to gossip' is the definition.
(synonyms)
'return bag' is the wordplay.
'return' is a reversal indicator.
'bag' in reverse letter order is 'GAB'.
(Other definitions for gab that I've seen before include "This may be a gift" , "Natter" , "The Irish are said to have the gift of it" , "Talk a lot" , "rabbit" .)