Reconstruction of car held at church (9)
I believe the answer is:
cathedral
'church' is the definition.
(I know that cathedral is a type of cathedral)
'reconstruction of car held at' is the wordplay.
'reconstruction of' is an anagram indicator (I've seen 'reconstructions of' mean this).
'car'+'held'+'at'='carheldat'
'carheldat' with letters rearranged gives 'CATHEDRAL'.
(Other definitions for cathedral that I've seen before include "Head church of diocese" , "Large, important church" , "Principal church of see" , "It could hold a large mass" , "Had claret (anag.)" .)