On and on and on, railing at international banishment (10)
I believe the answer is:
relegation
'banishment' is the definition.
(relegation is a kind of banishment)
'on and on and on railing at international' is the wordplay.
'on' becomes 're' (regarding).
'and' says to put letters next to each other.
'and' says to put letters next to each other.
'on railing' becomes 'leg' (I can't explain this - if you can you should give a lot more credence to this answer).
'international' becomes 'i' (abbreviation eg in IMF).
'leg'+'at'+'i'='legati'
'on' after 'legati' is 'legation'.
're' put next to 'legation' is 'RELEGATION'.
Can you help me to learn more?
(Other definitions for relegation that I've seen before include "Demotion, to a lower league" , "that's going down" , "Lowering of status" , "Transference to a lower league" .)