In Cornwall, Catholic assumes a belief that can’t be questioned (6,3)
I believe the answer is:
sacred cow
'in cornwall catholic assumes a belief that can't be questioned' is the definition.
Although both the answer and definition are singular nouns, I cannot understand how they can define each other.
'in cornwall catholic assumes a belief' is the wordplay.
'in' means one lot of letters goes inside another.
'cornwall' becomes 'SW' (Cornwall is in the South West of England).
'catholic' becomes 'C' (abbreviation as in RC for Roman Catholic).
'assumes' is an insertion indicator (assume can mean to take on).
'belief' becomes 'credo' (credo is a kind of belief).
'a'+'credo'='acredo'
'c' inserted inside 'acredo' is 'acredco'.
'sw' going around 'acredco' is 'SACRED COW'.
Can you help me to learn more?
(Other definitions for sacred cow that I've seen before include "counterpart of papal bull?" , "Institution not to be criticised" , "Person/custom unreasonably beyond criticism" , "Person or institution held to be above criticism" , "One unreasonably held to be above criticism" .)