Page including verbiage (7)
I believe the answer is:
padding
'verbiage' is the definition.
Although both the answer and definition are singular nouns, I don't understand how they can define each other.
'page' is the wordplay.
I cannot really see how this works, but
'page' could be 'p' and 'p' is found in the answer.
The remaining letters 'adding' is a valid word which might be clued in a way I don't understand.
This explanation may well be incorrect...
'including' is the link.
Can you help me to learn more?
(Another definition for padding that I've seen is " Soft stuffing".)