Meeting house (8)
I believe the answer is:
audience
I believe this is a double definition.
'meeting' is the first definition.
(I have seen 'important meeting' mean 'audience' so perhaps 'meeting' could also mean 'audience')
'house' is the second definition.
(I've seen this before)
(Other definitions for audience that I've seen before include "Group of spectators or listeners" , "Theatre-goers" , "Formal meeting with the Pope" , "Body of listeners" , "which may be given an address" .)