Roman place of assembly (5)
I believe the answer is:
forum
'roman place of assembly' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for forum that I've seen before include "Meeting of people for discussion" , "Place of assembly for the people in ancient Greece" , "Roman meeting place" , "Arena for debate" , "Place where public meeting or discussion is held" .)