Wind in church from one alcove (7)
I believe the answer is:
chinook
'wind' is the definition.
(chinook wind is a kind of wind)
'church from one alcove' is the wordplay.
'church' becomes 'ch' (common abbreviation).
'from' is a charade indicator (letters next to each other).
'one' becomes 'i' (Roman numeral).
'alcove' becomes 'nook' (I've seen this before).
'ch'+'i'+'nook'='CHINOOK'
'in' is the link.
(Other definitions for chinook that I've seen before include "warm one" , "Warm dry wind of the Rockies and type of helicopter" , "hot wind" , "Arctic wind" , "Warm dry wind of the Rockies - large Pacific salmon" .)