Novel letter on the blue side (5)
I believe the answer is:
story
'novel' is the definition.
(thesaurus)
'on the blue side' is the wordplay.
'on' says to put letters next to each other.
'the blue' becomes 'tory' (I've seen this before).
'side' becomes 's' (this could be a standard abbreviation which I don't know about).
'tory' after 's' is 'STORY'.
'letter' acts as a link.
This may not be correct. It may belong to another bit of the clue.
Can you help me to learn more?
(Other definitions for story that I've seen before include "Narration" , "Tale - lie" , "Narrative or account" , "See 10 and 19" , "Rumour" .)