A film or three (4)
I believe the answer is:
omen
This clue might be a double definition.
'a film' is the first definition.
The answer and definition can be both related to communication as well as being singular nouns.
Perhaps you can see a link between them that I don't see?
'three' is the second definition.
Although both the answer and definition are singular nouns, I cannot understand how they can define each other.
'or' acts as a link.
Can you help me to learn more?
(Other definitions for omen that I've seen before include "writing on the wall" , "Straw in the wind" , "Sign of something about to happen" , "Forecast" , "Portent, prophetic sign" .)