Teleprompter (7)
I believe the answer is:
autocue
'teleprompter' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for autocue that I've seen before include "Newscaster's reading aid" , "Hidden screen showing the script to a speaker" , "TV signal" , "Newsreader's aid" , "Speaker's aid" .)