The spirit a priest could show (6)
I believe the answer is:
sprite
'the spirit' is the definition.
(thesaurus)
'a priest could show' is the wordplay.
'priest' can be anagrammed to 'SPRITE'.
Though, I'm not clear how the anagram is indicated.
Can you help me to learn more?
(Other definitions for sprite that I've seen before include "Puck, say" , "Naiad" , "sports car" , "Stripe on a fairy" , "A fairy or goblin" .)