Marvellous epicurean perhaps could be heard (8)
I believe the answer is:
dynamite
'marvellous epicurean' is the definition.
Although both the answer and definition are singular nouns, I can't see how one could define the other.
'perhaps could be heard' is the wordplay.
'perhaps' becomes 'dyna' (I can't explain this - if you can you should give a lot more credence to this answer).
'could' becomes 'might' (synonyms).
'be heard' shows a homophone (sound like).
'might' is a homophone of 'mite'.
'dyna'+'mite'='DYNAMITE'
Can you help me to learn more?
(Other definitions for dynamite that I've seen before include "Blast" , "Nitroglycerine explosive" , "Tiny dame (anag)" , "Dainty me could be explosive" , "Explosive - amazing thing" .)