Assemblies for judicial business (6)
I believe the answer is:
courts
'assemblies for judicial business' is the definition.
(I've seen this before)
This is the entire clue.
(Other definitions for courts that I've seen before include "Woos - judiciary" , "Assemblies to conduct judicial business" , "Woos, as in law chambers?" , "Tries to win love" , "Pays suit to, woos" .)