You could see it on telly, we hear (4)
I believe the answer is:
text
'you' is the definition.
Both the answer and definition are singular nouns.
Maybe they are linked in a way I don't understand?
I cannot understand how the rest of the clue works.
Can you help me to learn more?
(Other definitions for text that I've seen before include "Document to be studied" , "Writing or printing" , "Words of a book" , "Written material for study" , "piece of writing" .)