Crash having quietly pressed bell (5)
I believe the answer is:
prang
'crash' is the definition.
(to prang is to crash a car)
'quietly pressed bell' is the wordplay.
'quietly' becomes 'p' (p for piano and quiet).
'pressed bell' becomes 'rang' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'p'+'rang'='PRANG'
'having' acts as a link.
Can you help me to learn more?
(Other definitions for prang that I've seen before include "Minor accident" , "nasty collision" , "knock" , "Crash (informal)" , "Popularly, a motoring contretemps" .)