Someone sticking nose in fruit, by the sound of it (7)
I believe the answer is:
meddler
'someone sticking nose in' is the definition.
(to stick one's nose in is to meddle)
'fruit by the sound of it' is the wordplay.
'fruit' becomes 'medlar' (apple-like fruit).
'by the sound of it' indicates a 'sounds like' (homophone) clue.
'medlar' sounds like 'MEDDLER'.
(Other definitions for meddler that I've seen before include "One tampering" , "One who interferes" , "Busybody (not fruit!)" , "Interferer" , "One interfering" .)