Place for drama broadcast at three (7)
I believe the answer is:
theatre
'place for drama' is the definition.
(I've seen this before)
'broadcast at three' is the wordplay.
'broadcast' indicates anagramming the letters.
'at'+'three'='atthree'
'atthree' anagrammed gives 'THEATRE'.
(Other definitions for theatre that I've seen before include "Entertainment venue" , "Place for actors" , "Criterion, possibly" , "Criterion, perhaps" , "Hospital operating room - playhouse" .)