Overflowing quantity in a bread roll get-together (9)
I believe the answer is:
abundance
'overflowing quantity' is the definition.
'abundance' can be an answer for 'quantity' (abundance is a kind of quantity). I am not certain of the 'overflowing' bit.
'a bread roll get-together' is the wordplay.
'bread roll' becomes 'bun' (a bun is a bread roll).
'get-together' becomes 'dance' (I can't explain this - if you can you should give a lot more credence to this answer).
'a'+'bun'+'dance'='ABUNDANCE'
'in' acts as a link.
Can you help me to learn more?
(Other definitions for abundance that I've seen before include "Danube can flow with plenty" , "Ban due can be plenty" , "Weallth, profusion" , "call at whist" , "State of plenty" .)