You could see it on telly, we hear (4)
I believe the answer is:
text
'you' is the definition.
Both the definition and answer are singular nouns.
Maybe they are linked in a way I don't understand?
'see it on telly we hear' is the wordplay.
I cannot really see how this works, but
'it' could be 't' (abbreviation. e.g. in 'tis) and 't' is found within the answer.
The remaining letters 'ext' is a valid word which might be clued in a way I don't see.
This explanation may well be incorrect...
'could' acts as a link.
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" .)