Tower topper, perhaps (5)
I believe the answer is:
spire
'tower topper perhaps' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for spire that I've seen before include "Tall cone-shaped structure on church" , "Church feature visible from a distance" , "Feature of many churches" , "Crooked feature in Chesterfield" , "Church steeple" .)