Sound as a bell (5)
I believe this clue is a double definition.
'sound' is the first definition.
(ringing is a kind of sounding)
'a bell' is the second definition.
(to give someone a bell is to ring them on a phone)
'as' is the link.
(Other definitions for ring that I've seen before include "sign of union?" , "Encircle; arena" , "13's story of a 17" , "place for fight" , "Besiegers' formation" .)
'sound as a bell' is the definition.
(make a ding sound)
'sound as' is the wordplay.
'sound' becomes 'din' (din can mean a loud disturbance).
'as' becomes 'g' (I am not sure about this - if you are sure you should believe this answer much more).
'din'+'g'='DING'
Can you help me to learn more?
(Other definitions for ding that I've seen before include "Keep sounding" , "Sound" , "- - dong" , "-- -a-ling" .)
(Other definitions for sonorous that I've seen before include "Loud and deep in timbre" , "Resonant" , "Deep and full-sounding" , "Giving out a deep clear sound, like a bell say" , "(Of a sound) deep, full" .)
'sound as a bell' is the definition.
(I've seen this before)
This is the entire clue.
(Other definitions for clang that I've seen before include "Resounding metallic noise" , "Harsh cry" , "Make a loud metallic noise" , "Toll of a bell" , "Noise as of cymbals" .)
'sound as a bell' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for knell that I've seen before include "Solemn sound of a bell" , "(Of bell) ring solemnly" , "it precipitates death" , "Sound of funeral bell" , "Funeral toll" .)