Banish from Carnoustie (4)
I believe the answer is:
oust
'banish' is the definition.
(I've seen this in another clue)
'from carnoustie' is the wordplay.
'from' indicates a hidden word.
'OUST' can be found hidden inside 'carnoustie'.
(Other definitions for oust that I've seen before include "Show the door to" , "Put out, say of office" , "Expel (from a place)" , "Depose" , "Remove from a position of power" .)