Sound the bells again - there's a cancellation (6)
I believe the answer is:
repeal
'a cancellation' is the definition.
(I know that repeal is a type of cancellation)
'sound the bells again' is the wordplay.
I cannot really see how this works, but
'sound' could be 'peal' (pealing is a kind of sounding) and 'peal' is found within the answer.
'again' could be 're' (prefix meaning 'again') and 're' is located in the answer.
No letters remain.
This may be the basis of the clue (or it may be nonsense).
'there's' is the link.
Can you help me to learn more?
(Other definitions for repeal that I've seen before include "This is what O'Connell wanted" , "Cancel officially, annul" , "set aside" , "Cancel or nullify a law" , "'Annul, revoke (6)'" .)