A decoration, of course, has a certain resonance (4)
I believe the answer is:
gong
'a decoration' is the definition.
(I've seen this before)
'course has a certain resonance' is the wordplay.
I cannot really see how this works, but
'course' could be 'n' and 'n' is found in the answer.
The remaining letters 'gog' is a valid word which might be clued in a way I don't understand.
This explanation may well be incorrect...
'of' is the link.
Can you help me to learn more?
(Other definitions for gong that I've seen before include "Sound announcing meal" , "Round metal plate struck to resound" , "Medal; forty down" , "Instrument - award" , "cross, possibly" .)
