Something in writing? (4)
I believe the answer is:
noun
'something in writing?' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for noun that I've seen before include "Word that refers to a person, place or thing" , "Word identifying person, place or thing" , "Identifying word (common or proper)" , "Substantive word" , "Naming word (grammar)" .)