Mole's sensitive area under discussion (6)
I believe the answer is:
groyne
'mole's' is the definition.
('groyne' can be a synonym of 'mole')
'sensitive area under discussion' is the wordplay.
I cannot quite understand how this works, but
'area' could be 'ne' and 'ne' is found within the answer.
This may be the basis of clue (or it may be nonsense).
Can you help me to learn more?
(Other definitions for groyne that I've seen before include "A bulwark" , "Seaside feature" , "Sea wall" , "jetty" , "hydraulic structure" .)