Steeples (6)
I believe the answer is:
spires
'steeples' is the definition.
('spire' can be a synonym of 'steeple')
This is the entire clue.
(Other definitions for spires that I've seen before include "Tall towers tapering to a point" , "Tall towers that tapers to a point" , "Oxford has many" , "On 11 down, they taper to a point" , "'And that sweet city with her dreaming ------' (M Arnold)" .)