Work on Broadway, say (3)
I believe the answer is:
act
This clue is a double definition.
'work on broadway' is the first definition.
(I've seen this in another clue)
'say' is the second definition.
(I know that say is a more specific form of communicate)
(Other definitions for act that I've seen before include "Start of a drama" , "Perform - part of a play" , "Feat" , "Assumed attitude" , "Aussie parliamentarians exert influence here?" .)