Possibly Catholic, for the time being (5)
I believe the answer is:
nonce
This clue might be a double definition.
'possibly catholic' is the first definition.
Although both the answer and definition are singular nouns, I can't see how one could define the other.
'time being' is the second definition.
(synonyms)
'for the' acts as a link.
Can you help me to learn more?
(Other definitions for nonce that I've seen before include "The moment" , "never repeated such a word" , "Denoting word coined for one occasion" , "special occasion" , "One serving prison sentence" .)