Hearing the sound of gongs, pokes one’s nose in (7)
I believe the answer is:
meddles
'hearing the sound of gongs pokes' is the definition.
I can't judge whether this definition defines the answer.
'one's nose in' is the wordplay.
I cannot quite see how this works, but
'one' could be 'me' (a setter might use 'one' to humourously mean 'me') and 'me' is located in the answer.
This explanation may well be incorrect...
Can you help me to learn more?
(Other definitions for meddles that I've seen before include "Intrudes in other people's affairs" , "Intrude in other people's affairs" , "Interferes, tampers with" .)