Place of worship had claret prepared (9)
I believe the answer is:
cathedral
'place of worship' is the definition.
(cathedral is a kind of place of worship)
'had claret prepared' is the wordplay.
'prepared' indicates an anagram.
'had'+'claret'='hadclaret'
'hadclaret' with letters rearranged gives 'CATHEDRAL'.
(Other definitions for cathedral that I've seen before include "See 6" , "One would be in the city" , "dramatic murder location" , "Carted Hal off to church" , "edifice" .)