Series of images Oscar found in container (7)
I believe the answer is:
cartoon
'series' is the 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?
'images oscar found in container' is the wordplay.
'images oscar' becomes 'o' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'found in' is an insertion indicator.
'container' becomes 'carton' (carton is a kind of container).
'o' going within 'carton' is 'CARTOON'.
'of' is the link.
Can you help me to learn more?
(Other definitions for cartoon that I've seen before include "Comic strip" , "Jokey drawing" , "Witty drawing" , "Humorous drawing or film of a succession of them" , "Animated film made by photographing a series of drawings" .)