Brilliant Swiss knight put in jail (4)
I believe the answer is:
jung
'brilliant swiss' is the definition.
The definition and answer can be both people as well as being singular nouns.
Maybe you can see a link between them that I don't see?
'knight put in jail' is the wordplay.
'knight' becomes 'n' (chess abbreviation).
'put in' is an insertion indicator.
'jail' becomes 'jug' (synonyms).
'n' placed inside 'jug' is 'JUNG'.
Can you help me to learn more?
(Other definitions for jung that I've seen before include "Famous psychologist" , "Freud's collaborator" , "Swiss psychiatrist" , "Carl ---, fell out with Freud" , "Carl --, psychoanalyst" .)