Sounds like great craic as a consequence of smashing the record (8)
I believe the answer is:
breakage
'record' is the definition.
The definition and answer can be both acts as well as being singular nouns.
Maybe they are linked in a way I don't understand?
I don't understand the remainder of the clue.
Can you help me to learn more?
(Other definitions for breakage that I've seen before include "Smashed article" , "Damage caused by smashing" , "Act of smashing" , "Act of shattering" , "Reimbursement for goods damaged in transit" .)