Token elevated cleric keeps where in French church? (7)
I believe the answer is:
voucher
'token' is the definition.
(both can mean a ticket carrying a discount)
'elevated cleric keeps where in french church?' is the wordplay.
'elevated' says the letters should be written in reverse (in a down clue, letters go up).
'cleric' becomes 'Rev' (abbreviation for Reverend).
'keeps' means one lot of letters goes inside another.
'where in french' becomes 'ou' ('where' in French).
'church?' becomes 'ch' (common abbreviation).
'rev' reversed gives 'ver'.
'ou'+'ch'='ouch'
'ver' enclosing 'ouch' is 'VOUCHER'.
(Other definitions for voucher that I've seen before include "Document that can be exchanged for goods" , "Coupon that can be redeemed" , "Paper token" , "Ticket" , "Coupon; receipt" .)