… and to cover his city following article in study … (9)
I believe the answer is:
caparison
'and to cover his' is the definition.
Although both the answer and definition are singular nouns, I don't see how they can define each other.
'city following article in study' is the wordplay.
'city' becomes 'paris' (Paris is an example).
'following' says to put letters next to each other.
'article' becomes 'a' (the indefinite article in English).
'in' is an insertion indicator.
'study' becomes 'con' (con can informally mean to study).
'paris' put after 'a' is 'aparis'.
'aparis' inserted within 'con' is 'CAPARISON'.
Can you help me to learn more?
(Other definitions for caparison that I've seen before include "horse's cover" , "Cover for a horse" , "Rich clothing" , "rich gear" , "covering for the Shires?" .)