Countenance gossip about getting stuck into struggle (6)
I believe the answer is:
visage
'countenance' is the definition.
(I know that countenance can be written as visage)
'gossip about getting stuck into struggle' is the wordplay.
'gossip' becomes 'gas' (I've seen this before).
'about' is a reversal indicator.
'getting stuck into' is an insertion indicator.
'struggle' becomes 'vie' (to vie is to struggle or contend with).
'gas' reversed gives 'sag'.
'sag' inserted within 'vie' is 'VISAGE'.
(Other definitions for visage that I've seen before include "Face, aspect" , "Mug" , "Clock" , "A person's face, countenance" .)