Double agent (4)
'double agent' is the definition.
(synonyms)
This is all the clue.
(Other definitions for mole that I've seen before include "Spy; burrower" , "Spy, skin spot and furry animal" , "Furry burrowing animal" , "Skin blemish and burrowing animal" , "Counterspy" .)
'double agent' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for spy that I've seen before include "Notice" , "Keep watch secretly, maybe for foreign government" , "Undercover agent" , "One gathers information on enemies" , "Discover" .)