Islander to note wicked marsupial (9,5)
I believe the answer is:
tasmanian devil
'marsupial' is the definition.
(Tasmanian devil is an example)
'islander to note wicked' is the wordplay.
'islander' becomes 'tasmanian' (someone from Tasmania).
'to note' becomes 'D' (musical note).
'wicked' becomes 'evil' (associated in meaning).
'tasmanian'+'d'+'evil'='TASMANIAN DEVIL'
(Other definitions for tasmanian devil that I've seen before include "This beast is certainly wild" , "Vicious little Aussie" , "Ferocious Australian marsupial" , "Ferocious animal" , "Creature" .)