Battle later resolved in court (8)
I believe the answer is:
waterloo
'battle' is the definition.
(I've seen this before)
'later resolved in court' is the wordplay.
'resolved' indicates an anagram.
'in' means one lot of letters goes inside another.
'court' becomes 'woo' ('woo' can be a synonym of 'court'**).
'later' is an anagram of 'aterl'.
'aterl' placed within 'woo' is 'WATERLOO'.
(Other definitions for waterloo that I've seen before include "Wellington's victory" , "Total or crushing defeat" , "where trains come and go" , "Decisive battle" , "Signal failure for French" .)