Literary form (5)
![Ross](/clue/static/ross-mug.min.png)
I believe the answer is:
essay
'literary form' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for essay that I've seen before include "Try; a piece of writing" , "Make an effort to write one" , "School compeosition" , "Endeavour" , "Attempt - written work" .)