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' ('on' can be mean 'with reference to').
'and' is a charade indicator (letters next to each other).
'and' is a charade indicator (letters next to each other).
'on railing' becomes 'leg' (I can't justify 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' 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" .)