Succeeding in court case with three parties (10)
I believe the answer is:
trilateral
'case with three parties' is the definition.
Although both the answer and definition are singular nouns, I cannot understand how one could define the other.
'succeeding in court' is the wordplay.
'succeeding' becomes 'later' (similar in meaning).
'in' indicates putting letters inside.
'court' becomes 'trial' (trial court is a kind of court).
'later' placed inside 'trial' is 'TRILATERAL'.
Can you help me to learn more?
(Other definitions for trilateral that I've seen before include "involving several parties" , "Three-sided" , "Figure" .)